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deepaksoni
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Asked: 2021-03-15T22:14:28+05:30 In:

(i) cosec A/ (cosec A – 1) + cosec A/ (cosec A + 1) = 2 sec2 A (ii) cot A – tan A = (2cos2 A – 1)/ (sin A – cos A) (iii) (cot A – 1)/ (2 – sec2 A) = cot A/ (1 + tan A)

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This ques has been asked in previous year question paper of class 10 and is the very important ques from the Book- ML Aggarwal
Board- ICSE
Publication- Avichal
Chapter- Trigonometric Identities
Chapter number-18
Number of questions- 35

(i) cosec A/ (cosec A – 1) + cosec A/ (cosec A + 1) = 2 sec2 A

(ii) cot A – tan A = (2cos2 A – 1)/ (sin A – cos A)

(iii) (cot A – 1)/ (2 – sec2 A) = cot A/ (1 + tan A)

Class 10, chapter 18th, trigonometric identities

class10ml aggarwaltrigonometric identities
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    1. Guru

      Solution:

      (i) L.H.S. =
      ML Aggarwal Solutions for Class 10 Chapter 18 - 19

      ML Aggarwal Solutions for Class 10 Chapter 18 - 20

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