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
        If sec a.sin(36+a)=1 then find the value of a so that a and 36 +a are acute angles.Find a if sin 5a = cos 4a where 4a and 5a are acute angles. I will be highly obliged to for both the answers.
9 months ago

Answers : (1)

Utsav Basu
69 Points
							
Ans.: 1)   
     sec a * sin (36 + a) = 1
or, sin (36 + a) = cos a
or, sin (36 + a) = sin (90 – a)
or, 36 + a = 90 – a
or, a = 27
 
Ans.: 2)
     sin 5a = cos 4a
or, sin 5a = sin (90 – 4a)
or, 5a = 90 – 4a
or, a = 10
 
I hope I am able to answer your questions satisfactorily. Please approve my answers if so...
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