1 + cot theta + tan theta * sin theta - cos theta / sec ^ 3 theta - cosec ^ 3 theta (1+cot+tan)(sin-cos)=sec/ cosec^2-cosec/sec^2 sintheta 1 tantheta costheta 1 cottheta sectheta cosectheta prove that 1+ cot theta + tan theta sin theta * 1 + tan theta + cos theta * 1 + cot theta = sec the... (ii) (1+cot theta+tan theta)(sin theta-cos theta)=sin theta ta... prove that sin theta(1+tan theta) + cos theta(1+cot theta... 2sec 2 theta - sec 4 theta-2cosec^(2 theta + cose... tan a sin a 1 cot a cos a 2 sec a cosec a