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 
        
7sin2x + 3cos2x = 4, solve for x.
4 years ago

Answers : (1)

View Solution
Latika Leekha
askIITians Faculty
165 Points 
							Hello student,
 7sin2x + 3cos2x = 4
So, 4sin2x + 3sin2x + 3cos2x = 4
4sin2x + 3 (sin2x + cos2x) = 4
4sin2x + 3(1) = 4
4sin2x = 4 – 3
4sin2x = 1
sin2x = ¼
sin x = ½
So, x = 30 degree.
4 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on Trigonometry

Find the sum of it. Where n is from 0 to infinity Given s = arctan (2n/n^2+n+1) Answer & Earn Cool Goodies
if the quadratic equation x ^2 +(2 + tanA) x – (1 + tanA) = 0 has 2 integral roots, then sum of all... Answer & Earn Cool Goodies
Plz explain que.30........answer fast plx......,, ,????!!
what is the minimum value of (9sec^2x+4cosec^2x+7)?
In the chapter Trigonometric Ratios Of Multiple and submultiple angles, what is sin theta +sin 2...
View all Questions »


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