To simplify the expression, we can use trigonometric identities to manipulate the terms. We start by expanding the numerator:
cos²(3π/2 - α) + cos²(π + α)= cos²(3π/2)cos²(α) + cos²(π)cos²(α) (using cosine difference identity)= 0 + cos²(α)= cos²(α)
Now we substitute this back into the numerator:
sin(π/2 - α) * cos²(α) / sin(2π - α)
Since sin(π/2 - α) = cos(α), the expression simplifies to:
cos(α) * cos²(α) / sin(2π - α)
Now, we can simplify further by using trigonometric identities such as the sine and cosine addition identities:
cos(α) * cos²(α) / sin(2π)cos(α) - cos(α)sin(2π)sin(α)
cos(α) * cos²(α) / 0 - 0 (since sin(2π) = 0 and cos(2π) = 1)
So, the simplified expression is:
0
To simplify the expression, we can use trigonometric identities to manipulate the terms. We start by expanding the numerator:
cos²(3π/2 - α) + cos²(π + α)
= cos²(3π/2)cos²(α) + cos²(π)cos²(α) (using cosine difference identity)
= 0 + cos²(α)
= cos²(α)
Now we substitute this back into the numerator:
sin(π/2 - α) * cos²(α) / sin(2π - α)
Since sin(π/2 - α) = cos(α), the expression simplifies to:
cos(α) * cos²(α) / sin(2π - α)
Now, we can simplify further by using trigonometric identities such as the sine and cosine addition identities:
cos(α) * cos²(α) / sin(2π)cos(α) - cos(α)sin(2π)sin(α)
cos(α) * cos²(α) / 0 - 0 (since sin(2π) = 0 and cos(2π) = 1)
So, the simplified expression is:
0