Question

For 11b do I use tan or sin to solve it? Please help

Answer 1

Explanation:

a

`\cos(40) = (3.24)/(x) \\ x = (3.24)/( \cos(40) ) = 4.229 = 4.23 m`

b)

\tan(40) = \frac{y}{3.24} \\ y = 3.24 \times \tan(40) = 2.7186 m

= 2.72 m

Answer 2

The tangent of 40 degrees = BC / AC

Explanation: