# Recent questions tagged angle

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A triangle has interior angles with measures in the ratio of 1:2:3. If the longest side length of the triangle is 18, what is the length of the shortest side?
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Find the orthogonal projections of the vectors $\mathbf{e}_{1}=(1,0)$ and $\mathbf{e}_{2}=(0,1)$ on the line $L$ that makes an angle $\theta$ with the positive $x$-axis in $R^{2}$.Find the orthogonal projections of the vectors $\mathbf{e}_{1}=(1,0)$ and $\mathbf{e}_{2}=(0,1)$ on the line $L$ that makes an angle $\theta$ with the ...
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The angle between vectors $(1,3,-2)$ and $(4,-2,-1)$ is
The angle between vectors $(1,3,-2)$ and $(4,-2,-1)$ isThe angle between vectors $(1,3,-2)$ and $(4,-2,-1)$ is &nbsp; A) 0 B) $\dfrac{\pi}{3}$ C) $\dfrac{\pi}{2}$ D) $\pi$ E) none of the above ...
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The angle between vectors $(2,6,-4)$ and $(4,-2,-1)$ is
The angle between vectors $(2,6,-4)$ and $(4,-2,-1)$ isThe angle between vectors $(2,6,-4)$ and $(4,-2,-1)$ is &nbsp; A. 0 B. $\dfrac{\pi}{3}$ C. $\dfrac{\pi}{2}$ D. $\pi$ E. none of the above ...
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The angle between vectors $(1,3,-2)$ and $(4,-2,-1)$ is
The angle between vectors $(1,3,-2)$ and $(4,-2,-1)$ isThe angle between vectors $(1,3,-2)$ and $(4,-2,-1)$ is &nbsp; A) 0 B) $\frac{\pi}{3}$ C) $\frac{\pi}{2}$ D) $\pi$ E) none of the above ...
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Find the intercepts on the $x$ - and $y$-axes (if any) for the function $f(x)=\frac{x^{2}-3}{x+2}$ and discuss symmetry.
Find the intercepts on the $x$ - and $y$-axes (if any) for the function $f(x)=\frac{x^{2}-3}{x+2}$ and discuss symmetry.Find the intercepts on the $x$ - and $y$-axes (if any) for the function $f(x)=\frac{x^{2}-3}{x+2}$ and discuss symmetry. ...
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What are compound angle identities?
What are compound angle identities?What are compound angle identities? ...
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What is the double angle formulae in trigonometry?
What is the double angle formulae in trigonometry?What is the double angle formulae in trigonometry? ...
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Derive the formula $\cos A \cos B=\frac{1}{2}(\cos (A+B)+\cos (A-B))$
Derive the formula $\cos A \cos B=\frac{1}{2}(\cos (A+B)+\cos (A-B))$Derive the formula $\cos A \cos B=\frac{1}{2}(\cos (A+B)+\cos (A-B))$ ...
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Use double angle formulae to prove the identities
Use double angle formulae to prove the identitiesUse double angle formulae to prove the identities \ \sin 2 A=\frac{2 \tan A}{1+\tan ^{2} A}, \quad \cos 2 A=\frac{1-\tan ^{2} A}{1+\tan ^{2} A}, \qua ...
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Derive the following identities by putting $C=A+B$ and $D=A-B$ (and expressing $A$ and $B$ in terms of $C$ and $D)$
Derive the following identities by putting $C=A+B$ and $D=A-B$ (and expressing $A$ and $B$ in terms of $C$ and $D)$Derive the following identities by putting $C=A+B$ and $D=A-B$ (and expressing $A$ and $B$ in terms of $C$ and $D)$ \ \begin{aligned} &am ...
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You are curious how tall a tree is, but don't have any way to climb it. Describe a method for determining the height.
You are curious how tall a tree is, but don't have any way to climb it. Describe a method for determining the height.You are curious how tall a tree is, but don't have any way to climb it. Describe a method for determining the height. ...
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Find the image of p(-3, 5) when rotated through 360 degrees about the origin.
Find the image of p(-3, 5) when rotated through 360 degrees about the origin.What happens to the coordinates of a point that is rotated 360 degrees around the origin? ...
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Please what happens with a 360 degree rotation?
Please what happens with a 360 degree rotation?Find the image of p(-3, 5) when rotated through 360 degrees about the origin. ...
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Given that A=38,2° and B=146,4°. Calculate the value of: sin2A - cos¼B
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Given that A=38,2° and B=146,4°. What is the value of the following expression: 3sin²A
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The graph of the relation $y=x^{2}+2 x+k$ passes through the point $(2,0)$. Find the values of $\mathrm{k}$
The graph of the relation $y=x^{2}+2 x+k$ passes through the point $(2,0)$. Find the values of $\mathrm{k}$The graph of the relation $y=x^{2}+2 x+k$ passes through the point $(2,0)$. Find the values of $\mathrm{k}$ ...
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Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of:Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is &quot;L&quot; and the index of refraction of the s ...
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As a pendulum is raised to higher altitudes, its period:
As a pendulum is raised to higher altitudes, its period:As a pendulum is raised to higher altitudes, its period: w) increases x) decreases y) remains the same z) decreases, then remains the same ...
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Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the incident ray and the reflected ray?Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the i ...
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A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could explain this phenomena?A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the ...
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Graph each of the (oriented) angles below in standard position and classify them according to where their terminal side lies. Find three coterminal angles, at least one of which is positive and one of which is negative.Graph each of the (oriented) angles below in standard position and classify them according to where their terminal side lies. Find three coterminal an ...
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What is the radian measure of a circle?