Question

Sin a = x/y ; cos a = a/b then bx/ay represent

A) Tan a 

B) cot a 

C) sec a

D) cosec a

Answer 1

Correct option is: A) Tan a

We have sin a = \(\frac xy\) and cos a =  \(\frac ab\)

Now, \(\frac {bx}{ay} = \frac ba \times \frac xy = \frac 1{\frac ab} \times \frac xy\)

\( = \frac {\frac xy}{\frac ab} = \frac {sin\, a}{cos\, a} \) = tan a

Answer 2

Correct option is: A) Tan a