`(1+tan^2A)/(1+cot^2A)` is equal to `sec^2A` (b) `-1` (c) `cot^2A` (d) `tan^2A`

(1+tan^(2)A)/(1+cot^(2)A) is equal to sec^(2)A(b)-1(c)cot^(2)A(d)tan^(2)A

(1+ tan ^(2) A)/( 1 + cot^(2) A) equals

Choose the correct option. Justify your choice : (1+tan^2A)/(1+cot^2A) a. sec^2A b. -1 c. cot^2A d. tan^2A

The value of 2tan^(-1)(cos ec tan^(-1)x-tan cot^(-1)x) is equal to (a)cot ^(-1)x( b ) (cot^(-1)1)/(x) (c)tan ^(-1)x (d) none of these

(sec^2A)/(cos^2A)-(tan^2A)/(cot^2A)=1+2tan^2A

sec^2(tan^(01)2)+cos e c^2(cot^(-1)3) is equal to 5 (b) 13 (c) 15 (d) 6

sec^2(tan^(01)2)+cos e c^2(cot^(-1)3) is equal to 5 (b) 13 (c) 15 (d) 6

sec^(2)(tan^(01)2)+csc^(2)(cot^(-1)3) is equal to 5 (b) 13 (c) 15 (d) 6

sin(tan^(-1)99 + cot^(-1)99) is equal to a) 0 b) -1 c) 1/2 d) 1

sec^2(tan^(-1)2)+cos e c^2(cot^(-1)3) is equal to (a)5 (b) 13 (c) 15 (d) 6