Question

Work out the size of angle A

Answer 1

A = 93.2°

Explanation:

Apply sine's Law

`(9)/(sin38^(0) ) =(11)/(sinC)`

`sinC=(11sin38^(0) )/(9) =0.752475`

`C=sin^(-1) (0.752475)=48.8^(0)`
Apply the property of triangles to get the angle A

`A=(180-38-48.8)^(0) =93.2^(0)`

Hope this helps

Answer 2

You add 11 cm and 9 cm then devide it by 38