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Frequency of a trigonometric function: $g(x) = \sin(2\pi(x-a)b \ \cos(2\pi(x-a)c)) + d.$

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#algebra-precalculus #trigonometry
3.6k
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How do I evaluate integrals that involve the signum ($\text{sgn}$) function?

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#calculus #integration #functions #trigonometry #definite-integrals
138
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Exact calulation of trigonometric functions

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#trigonometry #computer-science #approximation
1.7k
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What do the trigonometric ratios actually represent

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#algebra-precalculus #trigonometry
322
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How to integrate this formula with secant, exponential, and tangent?

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#calculus #integration #trigonometry #indefinite-integrals
2.5k
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Equation of tangent on Cartesian plane given center and radius of a circle

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#geometry #trigonometry #circles #coordinate-systems
1k
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How to calculate the range of $x\sin\frac{1}{x}$?

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#calculus #functions #trigonometry
799
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Determining the angles of a triangle given the ratio between its edges

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#algebra-precalculus #geometry #trigonometry
109
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Logarithm and "basic" functions.

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#calculus #integration #trigonometry #logarithms #elementary-functions
50
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Prove $a_n$ is within a specific range for all $n\in\mathbb{N}$

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#calculus #real-analysis #trigonometry
935
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Prove that $\cos(x / 2) + \cos(y / 2) - \cos(z / 2) = 4 \sin((\pi - x) / 4)\sin((\pi - y) / 4) \sin ((\pi + z) / 4)$

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#trigonometry
1.7k
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$4 \sin 72^\circ \sin 36^\circ = \sqrt 5$

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#trigonometry #elementary-functions
176
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How is arccos derived?

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#trigonometry
452
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How does $\arccos$ actually work?

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#trigonometry
106
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Link between a cubic polynomial and a trig identity

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#trigonometry #cubics

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