Without using a calculator

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

Without using a calculator, compare P=sin⁡20∘+sin⁡40∘P=\sin 20^{\circ}+\sin 40^{\circ} with Q=sin⁡30∘Q=\sin 30^{\circ}. Which statement is correct? (a) P+Q=1P+Q=1 (b) P=QP=Q (c) P>QP>Q (d) P<QP<Q

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