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: 10
        Trigonometry question:Prove that-(tanA-tanB) ²+(1+tanAtanB)²=sec²Asec²B
9 months ago

Answers : (1)

Shashank Singh
askIITians Faculty
57 Points
							on expanding we get
tan^2A + tan^2B -2tanAtanB +1 + tan^2Atan^2B – 2tanAtanB
= 1+tan^2A +tan^2B+tan^2Atan^2B
= sec^2A + tan^2B(1+tan^2A)
= sec^2A + sec^2A tan^2B
= sec^2A(1+tan^2B)
= sec^2Asec^2B …....... [hence proved]
9 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 1,590 off

COUPON CODE: SELF10


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


Get Extra Rs. 64 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

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