What are double angle identities?
Double angle identities express trigonometric functions of double angles:$\boldsymbol{\cos(2\theta) = [...]
What are sum and difference identities?
Sum and difference identities are used to find the sine [...]
What are the periodicity identities for trigonometric functions?
Periodicity identities allow shifting angles by $\boldsymbol{\frac{\pi}{2}}, \boldsymbol{\pi}, \boldsymbol{2\pi}$, [...]
How do you find the sine and cosine of common angles?
Angle sin cos $\boldsymbol{0^\circ}$ $\boldsymbol{0}$ $\boldsymbol{1}$ $\boldsymbol{30^\circ}$ $\boldsymbol{\frac{1}{2}}$ $\boldsymbol{\frac{\sqrt{3}}{2}}$ [...]
What are reciprocal identities in trigonometry?
Reciprocal identities relate trigonometric functions to their reciprocals: $\boldsymbol{\csc [...]
What are the basic trigonometric functions?
The basic trigonometric functions are: $\boldsymbol{{\textbf{Sine (sin } \theta ): [...]
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