1) cos 150° = -cos 30° =
2) sin 135° = sin 45° =
3) cos 120° = -cos 60° =
4) sin 315° = -sin 45° =
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
1) cos 150° = -cos 30° =
2) sin 135° = sin 45° =
3) cos 120° = -cos 60° =
4) sin 315° = -sin 45° =