Maths / Introduction to Trigonometry / Trigonometric Identities

QUESTION

The value of $\left ( sin ^27\frac{1}{2}^0+cos^27\frac{1}{2}^0 \right )-\left ( sin^230^0+cos^230^0 \right )+\left ( sin ^27^0+sin^283^0 \right )$ is equal to

 OPTIONS A. 3 B. $3\frac{1}{2}$ C. 2 D. 1
Right Option : D

EXPLANATION
Explain TypeExplanation Content
Text

sin $83^0=cos 7^0$

$\therefore$ the given expression is 1-1+1=1

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