Trigonometry Examples

$\frac{1}{\sec (90 - t)}$

Step 1

Rewrite $\sec (90 - t)$ in terms of sines and cosines.

$\frac{1}{\frac{1}{\cos (90 - t)}}$

Step 2

Multiply by the reciprocal of the fraction to divide by $\frac{1}{\cos (90 - t)}$ .

$1 \cos (90 - t)$

Step 3

Multiply $\cos (90 - t)$ by $1$ .

$\cos (90 - t)$