Question

find the value of 3 sin²60° + cos² 30°- 2 tan 45°​

Answer 1

3 sin² 60° + cos² 30° - 2 tan 45°

3(root3/2)² + (root3/2)² - 2(1)

3×3/4 + 3/4 - 2

9/4 + 3/4 - 2

12/4 - 2

3-2

1