MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

⇐ BackProceed to Checkout ⇒
There are no items in this cart.
Continue Shopping
Menu
Grade: 11 
        
express cos4​​A in terms of cosA
4 years ago

Answers : (1)

View Solution
ng29
1698 Points 
							
it is just application of trigonometry formula 
split 4A in A+3A and use formula for cos(a+b)
then expand formula for cos3x, u will get ur desired form of answer
 
APPROVE IF USEFUL
4 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on Trigonometry

Find the sum of it. Where n is from 0 to infinity Given s = arctan (2n/n^2+n+1) Answer & Earn Cool Goodies
Number of solution(s)of the equation sin2A + cos2A = -1/2 ; A belongs in range[0,pi/2] (a)0 (b)1... Answer & Earn Cool Goodies
If tanθ=(√3-1)/(√3+1),please prove that: sinθ+cosθ=√3/√2
ABCD is a quadrilateral in which P,Q,R,S,are the mid point of the side AB,BC,CD,DA.AC is the...
Tan(45-A/2)+tan(45+A/2)=4/√3 then the general solution is
View all Questions »


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 31 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers To Win!!! Click Here for details