Question

In ABC, angle B = 90° A B = 7√3 cm, Ac= 14 cm,
B C = 7cm, find
measure of angle A.​

Answer 1

Step-by-step explanation:

given that , /_B = 90° , A B = 7√3 cm, Ac= 14 cm,

B C = 7cm

so here , /_A is opposite to BC (7cm)..

now, sinA = opp/hyp = BC/AC = 7/14 = 1/2

if , sin A = 1/2

then A = 30° .... ;):)