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deepaksoni
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Asked: 2021-03-16T02:31:15+05:30 In:

(i) Prove that (Sin^3A+cos^3A/sinA+cosA) + (sin^3A-cos^3A/sinA-cosA)=2 (ii)Prove that tan2A/(1+tan2A)+cot2A/(1+cot2A)=1

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This is an important question from the
Book- ML Aggarwal
Board- ICSE
Publication- Avichal
Chapter- Trigonometric Identities
Chapter number-18

We have to prove the following Identities

(i) Prove that (Sin^3A+cos^3A/sinA+cosA) + (sin^3A-cos^3A/sinA-cosA)=2 (ii)Prove that tan2A/(1+tan2A)+cot2A/(1+cot2A)=1

Trigonometric Identities, class 10th, chapter 18th, question no29 , ICSE board, ML aggarwal..

icse board 10ml aggarwaltrigonometric identities
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      Solution:

      ML Aggarwal Solutions for Class 10 Chapter 18 - 46

      ML Aggarwal Solutions for Class 10 Chapter 18 - 47

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