Question

sin²x + sin² 30 = 1.
Find x. ​

Answer 1

taking square root on b.s

sinx+sin30=1

sinx=1-sin30

sinx=1-0.5

sinx=0.5

x=arcsin(0.5)

x=30

Answer 2

$sin ^{2} x + sin^{2}30 = 1$

▶$sin ^{2} x = 1 - sin^{2} 30$

▶$sin ^{2} x= 1 - 1 \div 4$

▶$sin ^{2} x= (sqrt \: 3) \div 2$

▶$sin ^{2} x = 60 ^{o}$