wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Solve:
3sin2x7sinx+2=0

Open in App
Solution

Let u=sin(x).Substitute u for all occurrences ofsin(x).

3u27u+2

3u26u1u+2

3u(u2)1(u2)

(u2)(3u1)

Replace all occurrences of u with sin(x).

(sin(x)2)(3sin(x)1)

Replace the leftside with the factored expression.

(sin(x)2)(3sin(x)1)=0

If any individual factor on the left side of the equation is equal to 0,the entire expression will be equal to 0.

sin(x)2=0 or 3sin(x)1=0

sin(x)=2 or sin(x)=13



flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Monotonicity
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon