Question

If 6 cos^2A=9/2 , then find the value of sin A

Answer 1

Answer:

6cos²A = 9/2

=>6(1-sin²A) = 9/2

=> 6-6sin²A = 9/2

=> 6sin²A = 6-9/2

=> 6sin²A = 3/2

=> sin²A = 3/12

=> sin²A = 1/4

=>sinA = 1/2