Consider the following statements : 1. (\sec^2\theta-1)(1-cosec^2\theta)=1 2. \sin\theta(1+\cos\theta)^{-1} +(1+\cos\theta)(\sin\theta)^{-1}=2cosec\theta Which of the above is/are correct ? [2018 CDS-I]

UPSC CDS Math Trigonometric Ratios and Trigonometric Identities Questions

Question : 24 of 107

Marks: +1, -0

Consider the following statements :
1. (sec2θ−1)(1−cosec2θ)=1
2. sinθ(1+cosθ)−1 +(1+cosθ)(sinθ)−1=2cosecθ Which of the above is/are correct ?

[2018 CDS-I]

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