Question

Work out the size of angle A. А 11 cm 9 cm 38° B С​

Answer 1

`A= 93°`

Explanation:

analysis:

according ABC is a triangle

AB-11cm AC-9cm ABC=38

sin 38° =0.62

AB:sinC-AC:sin 38

sinC-AB x sin 38°+AC=11 x 0.62 +9 -0.76

so 2C-49°

then angle A=180-38-49-93