To simplify this expression, we can use the trigonometric identity:
sin^2x + cos^2x = 1
Starting with the given expression:
5sin^2x + 3sinxcosx - 2cos^2x = 3
Rearranging the terms:
5sin^2x + 3sinxcosx - 2cos^2x - 3 = 0
Now we will substitute sin^2x with (1 - cos^2x):
5(1 - cos^2x) + 3sinxcosx - 2cos^2x - 3 = 0
Expand the terms:
5 - 5cos^2x + 3sinxcosx - 2cos^2x - 3 = 0
-7cos^2x + 3sinxcosx + 2 = 0
Now we will use the trigonometric identity sin2x = 2sinxcosx to rewrite the expression:
-7(1 - sin^2x) + 3sinx(2sinx) + 2 = 0
-7 + 7sin^2x + 6sin^2x + 2 = 0
13sin^2x - 7 = 0
Now divide by 13:
sin^2x = 7/13
This is the simplified form of the given expression.
To simplify this expression, we can use the trigonometric identity:
sin^2x + cos^2x = 1
Starting with the given expression:
5sin^2x + 3sinxcosx - 2cos^2x = 3
Rearranging the terms:
5sin^2x + 3sinxcosx - 2cos^2x - 3 = 0
Now we will substitute sin^2x with (1 - cos^2x):
5(1 - cos^2x) + 3sinxcosx - 2cos^2x - 3 = 0
Expand the terms:
5 - 5cos^2x + 3sinxcosx - 2cos^2x - 3 = 0
-7cos^2x + 3sinxcosx + 2 = 0
Now we will use the trigonometric identity sin2x = 2sinxcosx to rewrite the expression:
-7(1 - sin^2x) + 3sinx(2sinx) + 2 = 0
-7 + 7sin^2x + 6sin^2x + 2 = 0
13sin^2x - 7 = 0
Now divide by 13:
sin^2x = 7/13
This is the simplified form of the given expression.