# Ex 7.3, 8 - Chapter 7 Class 12 Integrals (Term 2)

Last updated at July 11, 2018 by Teachoo

Last updated at July 11, 2018 by Teachoo

Transcript

Ex 7.3, 8 1 − 𝑐𝑜𝑠 𝑥1 + 𝑐𝑜𝑠 𝑥 1 − cos𝑥1 + cos𝑥 We know that Thus, our equation becomes 1 − cos𝑥1 + cos𝑥 𝑑𝑥= 2 sin2 𝑥22 cos2 𝑥2 = sin2 𝑥2 cos2 𝑥2 𝑑𝑥 = tan2 𝑥2 𝑑𝑥 = sec2 𝑥2 −1𝑑𝑥 = sec2 𝑥2𝑑𝑥− 𝑑𝑥 = tan2 𝑥2 12 −𝑥+𝐶 =𝟐 𝐭𝐚𝐧 𝒙𝟐 −𝒙+𝑪

Ex 7.3

Ex 7.3, 1

Ex 7.3, 2

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Ex 7.3, 7

Ex 7.3, 8 You are here

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Ex 7.3, 11

Ex 7.3, 12

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Ex 7.3, 23 (MCQ)

Ex 7.3, 24 (MCQ) Important

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.