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| 1. |
Prove that cosec thita -sin thita ×sec thita -cos thita ×tan thita +cot thita =1 |
| Answer» (1/sin-sin²/sin) (1/cos-cos²/cos) (tan²/tan+tan/tan)=(cos/sin*sin²/cos) (sec²/tan)=cos*sin *1/cos*cos/sin1 | |