Let . Which of the following is…

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

Problem

Let

S=\sin^{2}35^{\circ}+\sin^{2}55^{\circ}

. Which of the following is true? (a)

S>1

(b)

\displaystyle S=\tfrac{2}{3}

(c)

S=1

(d)

S=2