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 
        SinA=-4/5 and cosB=7/25 and if none of A,B is in 4th quadrant then find the values of sin(A-B)
10 months ago

Answers : (2)

Arun
14805 Points 
							
Dear Sudhir
 
sin A = -4/5
cos A = 3/5
 
Cos B = 7/25
Hence
SinB = - 24/25
 
Now
Sin(A -B) = sin A * cos B - cos A sinB
 Put the value and get the answer.
 
 
Regards
Arun (askIITians forum expert)
10 months ago
Akshat Kumar tripathi
42 Points 
							We have sin A =-4/5cos B = 7/25 Then, sin B = 24/25cos A = -3/5Now, sin (A-B) = sin A cos B - cos A sin B     = -4/5*7/25 + 3/5*24/25      =72/125-28/125      =44/125
10 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on Trigonometry

If a cosP + b sinQ = c and the solution of the eqation are D , F then prove that , sin( D+F)=(2ab÷(a... Answer & Earn Cool Goodies
If a×sin^2 x+ b×cos^2 x =c ,bsin^2y+a cos^2 y=d and a tanx=b tany then prove that a^2/b^2=d-a/b-c... Answer & Earn Cool Goodies
Sir I have doubt on both the questions.please answer....
If cos (α+β) = 4/5 and sin (α-β) = 5/13 Then tan 2α =?
Plz solve these questions which I have attached the image......
View all Questions »

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