1 cot 0 sin 0 1 Which of the following shows the key steps in proving the identity OA 1 cot20 sin 2 0 csc 0 sin 0 1 sec 0 sin 0

Question

1 cot 0 sin 0 1 Which of the following shows the key steps in proving the identity OA 1 cot20 sin 2 0 csc 0 sin 0 1 sec 0 sin 0 sin 0 OB 1 cot 0 sin 0 sin 0 cot 0 sin 0 sin 0 cos 0 1 OC 1 cot 0 sin 0 tan 0sin 0 2 sin 20 1 cot 20 OD 1 cot 0 sin 0 cos 0 sin 20 sin 0 cos 0 sin 0 sin 2 1 1 cos 20 sin2 0 cos 0 1

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