New Zealand
Level 7 - NCEA Level 2

# Cosine Rule

## Interactive practice questions

Find the length of $a$a using the cosine rule.

Round your answer to two decimal places.

Easy
Approx 4 minutes

Find the length of $a$a using the cosine rule.

Round your answer to two decimal places.

Find the length of $a$a using the cosine rule.

Round your answer to two decimal places.

Find the length of $q$q using the cosine rule.

Round your answer to two decimal places.

### Outcomes

#### M7-4

Apply trigonometric relationships, including the sine and cosine rules, in two and three dimensions

#### 91259

Apply trigonometric relationships in solving problems