If, in , and , , and are rational numbers,…

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

If, in

\triangle ABC

A=90^\circ

and

c

\sin B

, and

\cos B

are rational numbers, then (1)

a

is rational (2)

a

is irrational (3)

b

is rational (4)

b

is irrational