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Some Applications Of Trigonometry

Question

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If $cotA space equals space straight b over straight a comma space$ prove that: $fraction numerator 2 space secA space plus space 1 over denominator cos space straight A space plus space 2 end fraction equals space fraction numerator square root of straight a squared plus straight b squared end root over denominator straight b end fraction.$

Solution

Solution not provided.

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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