1. Write the following trigonometric expression in terms of sine and cosine, and then simplify: sin x cot x Select the correct answer: 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.cos x 2.sin x 3.cot x 4.1

2. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.sin 2 x 2.sin x 3.sec 2 x 4.1

3. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.cos 2 x 2.sin 2 x 3.sin x 4.csc x

4. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2 sec x 2.sin x 3.2 cos x 4.cos x

5. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2 csc x 2.csc x 3.cot x 4.cot 2 x