Question 4 (iii)
Choose the correct option. Justify your choice.
(iii) (sec A + tan A) (1 - sin A) =
(A) sec A
(B) sin A
(C) cosec A
(D) cos A

Choose the correct option. Justify your choice.

(i) $9{\sec }^{2}A-9{\tan }^{2}A=$

(A) $1$

(B) $9$

(C) $8$

(D) $0$

(ii) $(1+\tan \theta +\sec \theta )(1+\cot \theta -\text{cosec}\theta )$

(A) $0$

(B) $1$

(C) $2$

(D) $-1$

(iii) $(\sec A+\tan A)(1-\sin A)=$

(A) $\sec A$

(B) $\sin A$

(C) $\text{cosec}A$

(D) $\cos A$

(iv) $\frac{1+{\tan }^{2}A}{1+{\cot }^{2}A}=$

(A) ${\sec }^{2}A$

(B) $-1$

(C) ${\cot }^{2}A$

(D) ${\tan }^{2}A$