Question

1)Find the value of (cos30+sin60)/1+cos60+sin30). 2)Find the value of (sin thita+cos thita)2+(cos thita-sin thita)2. 3)Find value of cosec230-sin2 45-sec2 60. 4)Simplify (sec thita+tan thita)(1-sin thita). 5)If thita is an acute angle and sin thita=cos thita,find the value of 3tan2 thita+2sin2 thita-1. plz give its answers as fst as possible.

Answer 1

1) (cos30+sin60)/(1+cos60+sin30) = ((root3)/2+(root3)/2)/(1+1/2+1/2) = (root3)/2