Trigonometry Quiz 13

Sin 81° + Tan 81° can be expressed as ……………

Sin (A + B) = Sin A + Sin B is true for

Ramu said Cos A = 2 ; Ravi said Cos A = 1. Do you agree with whom ?

In $\triangle ABC, \angle B$ = 90° then Sin A =

In a right angled triangle the adjacent side of 30°

$Cos \theta . Tan \theta =$

If Cos $\theta$ = $\frac{a}{b}$ then Cosec $\theta$ is equal to

Sec $\theta$ = $\frac{m+n}{2\sqrt {mn}}$ then Cosec $\theta$ =

$Cos^2 \theta (1 + Tan^2 \theta) =$

$\frac{Sin \theta}{1+ cos \theta}$