Answer:
sinx
Explanation:
sin^2 + cos^2 = 1 (pythagorean identity)
therefore we take the square sin and cos out to make a 1
sin2x + sinx + cos2x - 1 sinx sinx - 1 sinx - 2
left with sinx -1 +1 =
sinx because the 1s cancel out
-1
Evaluate for x=0
sin((2)(0))+sin(0)+cos((2)(0))−1(sin(0))(sin(0))−1(sin(0))−2
= −1
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