Question

Prove the following
(a) sin(-110°). + tan(290°)/cot(200) +cos (340)
(b) sin(0-270)/cos( 0-360) +sec(270+0)/cosec(180+0) +cot(90+0)/tan(360+0)

Answer 1

Answer:

Correct option is

A  .cos θ

Step-by-step explanation:

cos(90  

0

+θ)=−sinθ,sec(270  

0

−θ)=cosecθ,sin(180  

0

+θ)=−sinθ

∴    Given exp. =  

(−cosecθ)(−sinθ)tanθ

(−sinθ)(cosecθ)(−sinθ)

​

=cosθ.