Introduction to trigonometry

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chapter 8 Excercise - 8. 4

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Introduction to trigonometry: 

Introduction to trigonometry CHAPTER – 8 EXERCISE – 8.4

QUESTION 5:- (ii) cos A + 1 + sin A = 2 sec A 1 + sin A cosA: 

QUESTION 5:- (ii) cos A + 1 + sin A = 2 sec A 1 + sin A cosA

tanθ + cot θ = 1 + sec θ cosec θ1 – cot θ 1 – tan θ: 

tanθ + cot θ = 1 + sec θ cosec θ 1 – cot θ 1 – tan θ

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