sec^2(x) = tan^2(x) + 1 can be written as tan^2(x)= sec^2(x)-1
so the final equation is written as cos^2(x)tan^2(x)
using the trigonometric equation tan x = sinx / cos x
we get sin x = tan x * cos x
hence the answer (c). sin^2 (x)
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?