Question

If $\cos \theta =\frac{4}{5}$, find all other trigonometric ratios of angle θ.

Answer 1

Given:

Now, we have to find all the other trigonometric ratios.

We have the following right angle triangle.

From the above figure,

$\mathrm{Perpendicular}=\sqrt{{\mathrm{Hypotenuse}}^2-{\mathrm{Base}}^2}$


Therefore,