" 4.(tan "theta+2)(2tan theta+1)=5tan theta+sec^(2)theta

Prove (tan theta+2)(2tan theta+1)=5tan theta+2sec^(2)theta

(2 sin theta * tan theta (1- tan theta ) + 2 sin theta sec^(2) theta )/( (1+ tan theta)^(2))=

prove that 1+tan theta tan2 theta=sec2 theta

(2sin theta tan theta(1-tan theta)+2sin theta sec^(2)theta)/((1+tan theta)^(2))=(2sin theta)/(1+tan theta)

prove that (tan theta) / (sec theta -1) = (tan theta + sec theta + 1) / (tan theta + sec theta - 1)

Prove that :1+tan theta tan2 theta=sec2 theta

(2sin theta*tan theta(1-tan theta)+2sin theta*sec^(2)theta)/((1+tan theta)^(2))=(2sin theta)/(1+tan theta)

If : sec theta * tan theta (sectheta + tan theta) + (sec theta - tan theta) = sec^(n) theta + tan^(n) theta, "then" : n = A)1 B)2 C)3 D)4

prove that (sec theta-tan theta-1)/(sec theta+tan theta-1)=tan theta-sec theta

cos theta(tan theta+2)(2tan theta+1)=2sec theta+5sin theta