Question

Solve the sin, cos and tan of -240 degrees without calculator. Show Working​

Answer 1

Explanation:

sin(-240)°.

=cos(270-240)°

=cos 30°

=√3/2

cos(-240°)

=sin(270°-240°)

=sin30°

=0.5

tan(240°)

=tan(270°-240°)

=tan30°

=1/√3