|

Trignometry

Cool goIITian

 Joined: 7 May 2012 Post: 96
4 Jun 2012 16:27:50 IST
0 People liked this
3
303
inequations
Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Trigonometry

which of the following is not the general solution of the equation 2^cos2x + 1 =3.2^-sinĀ²xA] n?B] [n+1/2]?c] [n-1/2]?D] none of these

Hot goIITian

Joined: 1 Jan 2012
Posts: 185
6 Jun 2012 10:12:39 IST
0 people liked this

Cool goIITian

Joined: 7 May 2012
Posts: 96
7 Jun 2012 20:19:11 IST
0 people liked this

which of the following is not the general solution of the equation 2^cos2x + 1 = 3 . 2^-sinĀ²x.A] n?B] (n+1/2)?C] (n-1/2)?D] none of these

Hot goIITian

Joined: 1 Jan 2012
Posts: 185
8 Jun 2012 07:32:23 IST
0 people liked this

simple steps are::: (1) change COS2x=1-SIN^2x (2)then equation will become 2.2^-sin^2x +1 = 3.2-^sin^2x (3)then u will get sin^2x=1 (4)so ans. will be x=n(pie) +_ pie/2

 Some HTML allowed. Keep your comments above the belt or risk having them deleted. Signup for a avatar to have your pictures show up by your comment If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team

## For Quick Info

Name

Mobile

E-mail

City

Class

Vertical Limit

Top Contributors
All Time This Month Last Week
1. Bipin Dubey
 Altitude - 16545 m Post - 7958
2. Himanshu
 Altitude - 10925 m Post - 3836
3. Hari Shankar
 Altitude - 10050 m Post - 2205
4. edison
 Altitude - 10815 m Post - 7802
5. Sagar Saxena
 Altitude - 8625 m Post - 8064
 Altitude - 6330 m Post - 1979

Physics

Topics

Mathematics

Chemistry

Biology

Institutes

Parents Corner

Board

Fun Zone