Question

If cos²a + cos² B + cos² y = 3 , then
sin² a + sin² ß + sin² y =​

Answer 1

✪ Answer ✪

Given :- cos²a + cos² ß + cos² y = 3

To find :- sin² a + sin² ß + sin² y

Process :-

We know that cos²x + sin²x = 1 (Formula)

We can also write it as cos²x = 1 - sin²x

Then, cos²a + cos² ß + cos² y can be written as:

1- sin²a+1 -sin²ß +1-sin²y = 3

3 - (sin² a + sin² ß + sin² y) = 3

- (sin² a + sin² ß + sin² y) = 0

⋆    sin² a + sin² ß + sin² y = 0   ⋆