NZ Level 8 (NZC) Level 3 (NCEA) [In development]
Simplify expressions with reciprocals using complementary results

## Interactive practice questions

Fill in the blank with the acute angle that makes the statement true.

$\sin$sin$\editable{}$°$=$=$\cos25^\circ$cos25°

Easy
Less than a minute

Complete the blank in the following expression:

Rewrite $\cos37^\circ$cos37° in terms of its cofunction.

Rewrite $\sin76^\circ$sin76° in terms of its cofunction.

### Outcomes

#### M8-6

Manipulate trigonometric expressions

#### 91575

Apply trigonometric methods in solving problems