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
Menu
Grade: 11
        
The expression 4 cos^4  x - 2 cos2x - 1/2 cos4x when simplified reduces to:
(1) 2/3
(2) 3/2
(3) -2/3
(4) -3/2
one year ago

Answers : (1)

Umesh Kumar Mandal
13 Points
							
Put x=30. Then we will get.
=4.cos^4(30) -2 cos60 - 1/2 cos120 = 3/2 ans..after solving this equation.we will get ans as 3/2.....Thanks u from Umesh Kr Mandal, Inspector PO..Kolkata Customs.
one year ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


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