Express the trigonometric ratios sin A, sec A and tan A in terms of cot A.

Write all the other trigonometric ratios of ∠A in terms of sec A.

Choose the correct option. Justify your choice.

(1 + tan θ + sec θ)(1 + cot θ - cosec θ) =

1. 0

2. 1

3. 2

4. -1

Choose the correct option. Justify your choice.

(sec A + tan A) (1 – sin A) =

1. sec A

2. sin A

3. cosec A

4. cos A