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Some Applications of Trigonometry
Question
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If x sec θ – y tan θ = l,  x tan θ – y sec θ = m, then prove that x2 – y2 = l2 – m2.

Answer

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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°