If f (x) = TaNx (1-cos ^ 2) + sinxcosx, then the value of F (7 π / 6) is? 3Q

If f (x) = TaNx (1-cos ^ 2) + sinxcosx, then the value of F (7 π / 6) is? 3Q


F (x) = TaNx (1-cos ^ 2) + sinxcosx = sin2x, f (7 π / 6) = radical 3 / 3