Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

http://www.askiitians.com/forums/Integral-Calculus/1-cos3x-cosx-dx-please-say-how-to-simply_188653.htm i didnt get the 4 th line , could you please epxlain it to me? thank you.

i didnt get the 4th line , could you please epxlain it to me? thank you.

Grade:12

1 Answers

Arun
25763 Points
4 years ago
I have only written
Cos²x = 1 - sin²x
And
Cos²x -1 = - sin²x
Hope it helps
Sorry for some lines in whih I forgot to add square sign

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free