5.04 Trigonometric identities

Interactive practice questions

Given that $\sin x=\frac{4}{5}$sinx=45 and $\cos x=\frac{3}{5}$cosx=35, find $\tan x$tanx.

Easy

< 1min

Use properties of the trigonometric functions to find the exact value of $\tan10^\circ-\frac{\sin10^\circ}{\cos10^\circ}$tan10°−sin10°cos10°

Easy

< 1min

Given that $\cos x=\frac{15}{17}$cosx=1517 and $\tan x=\frac{8}{15}$tanx=815, find $\sin x$sinx.

Easy

1min

Given that $\sin x=\frac{b}{c}$sinx=bc and $\tan x=\frac{b}{a}$tanx=ba, find $\cos x$cosx.

Easy

< 1min