Question

If the sin square theta is equal to 1 upon 2 then find out the value of cos square theta ...... Using Pythagoras theorem

Answer 1

sin²theta = 1/2

sin theta = 1/√2

p/h = 1/√2

p = 1 h = √ 2

b = √ h² - p²

= √1 = 1

cos² theta = 1/(√2)²

= 1/2 ans