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Some Applications Of Trigonometry

Question

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Evaluate:
$space space space open parentheses fraction numerator sin space 10 degree over denominator cos space 80 degree end fraction close parentheses squared plus open parentheses fraction numerator cos space 80 degree over denominator sin space 10 degree end fraction close parentheses squared$

Solution

Solution not provided.
Ans. 2

Some More Questions From Some Applications of Trigonometry Chapter

Choose the correct option and justify your choice:
sin 2A = 2 sin A is true when A =
(A) 0° (B) 30° (C) 45° (D) 60°

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