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
        
prove that cos35+cos85+cos155=0.
 
plz sir/madam give me the full solution
 
                                                          Thank you
                                                  
3 months ago

Answers : (1)

Vikas TU
9517 Points
							
Dear student 
Cos35 +cos85+cos 155
Cos(60-25)+cos(60+25)+cos155
2 cos60 cos 25 + cos (180-25)
2*1/2 cos25 - cos 25
Cos 25 - cos25=0
3 months 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