Question

If Sin^2 20+ Cos^2 A= 1 then A is

full step by step answer plz​

Answer 1

Answer:

The answer, A = 20

Step-by-step explanation:

The explanation is in the picture.

if you find my answer any helpful then please do rank me as the brainliest.

Answer 2

Answer:

A = 20

Step-by-step explanation:

$sin^{2}\alpha + cos^{2}\alpha = 1 (Theorem)$

∴ $sin^{2}20 + cos^{2}20 = 1$

This shows that,

$cos^{2}A = cos^{2} 20$

A = 20