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Trigonometric ratios

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Reference no: EM1326306

Question 1: - Prove that (1+tan A tanB)2 + (tan A – tan B)2 = sec2A sec2B

Question 2: - Prove that   = (tanθ + secθ + 1)/(tanθ - secθ + 1)   = 1 + sinθ/cosθ

 

Reference no: EM1326306

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