Question

What is the value of sin² 60

Answer 1

sin60° equals √3/2

If we take square of this number, we get 3/4 (Square of square root of 3 is just 3 and square of 2 is 4)

So the answer is 3/4 or we can write as  0.75

Answer 2

Answer:

Sin²60 - sin²30

= (√3/2)² - (1/2)²

= 3/4 - 1/4

= 2/4

= 1/2

(or)

sin²60 - sin²30

= sin(60+30) . sin(60-30)

= sin90 . sin30

= 1 * 1/2

= 1/2