1 cos x 2 theta is equal to July 8, 2019 16 32 64 128 Sec 2 theta 1 1 cos x 2 theta is equal to X 1 x 2 cos theta then x is equal to If cos theta 2x 1 x 2 then tan theta is equal to If x 1 x 2 cos theta then xn 1 xn is equal to 1 + sin theta