Question

Theta = 11π/6 then cos theta + sin theta =

Answer 1

Answer:

root3-1/2.............. .... .....

Step-by-step explanation:

11pie/6=2pie-pie/6

costheta+sintheta=cos(2pie-pie/6)+sin(2pie-pie/6)

=cos(pie/6)-sin(pie/6)

=root3/2-1/2

=root3-1/2