Question

if sin2 (x+20)+cos2 75 = 1 then x=​

Answer 1

Answer:

55

Step-by-step explanation:

we know that if angle is same then

$sin^{2}x \: + \cos^{2}x = 1$

here,

$\sin ^{2}(x + 20) \: + \: cos^{2}75 = 1$

than here

x + 20 = 75

x = 75 - 20

x = 55