Sinx+sin(п-x)-cos(п/2-x)=-1

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вопрос

To solve this equation, we will simplify each trigonometric term:

Now we can rewrite the equation as:
sin(x) + sin(x) - sin(x) = -1
2sin(x) = -1
sin(x) = -1/2

So, x = π/6 + 2πn or x = 5π/6 + 2πn, where n is an integer.