![Ex 7.3, 8 - Chapter 7 Class 12 Integrals - Part 2](https://d1avenlh0i1xmr.cloudfront.net/22501220-b883-4e3e-94ab-0b9d201d8672/slide23.jpg)
Ex 7.3
Last updated at April 16, 2024 by Teachoo
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