IPMAT Indore 2021 (MCQ) - If the angles A, B, C of a triangle are in arithmetic progression such that (2A + B) = 1/2 then (B + 2C) is equal to | PYQs + Solutions

IPMAT Indore 2021

Geometry

Trigonometry

Medium

If the angles $A, B, C$ of a triangle are in arithmetic progression such that $\sin(2A + B) = 1/2$ then $\sin(B + 2C)$ is equal to

\frac{-1}{2}

\frac{1}{2}

\frac{-1}{\sqrt{2}}

\frac{3}{\sqrt{2}}

Correct Option: 1