Question

Cos²(180°-альфа)+cos²(90°-альфа)​

Answer 1

Ответ:

Объяснение:

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Answer 2

Let's calculate the values of cos²(180° - α) and cos²(90° - α).

1. cos²(180° - α): Using the trigonometric identity cos(180° - θ) = -cos(θ), we can find cos²(180° - α) as follows:

   cos(180° - α) = -cos(α) cos²(180° - α) = (-cos(α))² = cos²(α)

2. cos²(90° - α): Using the trigonometric identity cos(90° - θ) = sin(θ), we can find cos²(90° - α) as follows:

   cos(90° - α) = sin(α) cos²(90° - α) = (sin(α))² = sin²(α)

So, cos²(180° - α) = cos²(α) and cos²(90° - α) = sin²(α).