Question

Как найти sinφ зная cosφ?

Answer 1

Ответ:

Пошаговое объяснение:

Если sin(φ)>0, то sin(φ)=√[1-cos²(φ)]. Если sin(φ)<0, то sin(φ)=-√[1-cos²(φ)].

Answer 2

Finding sinφ Knowing cosφ

To find sinφ knowing cosφ, you can use the Pythagorean identity, which states that sin^2(φ) + cos^2(φ) = 1. From this identity, you can solve for sinφ using the value of cosφ.

Using the Pythagorean identity, we have:

sin^2(φ) + cos^2(φ) = 1

Solving for sinφ, we get:

sin^2(φ) = 1 - cos^2(φ)

Taking the square root of both sides, we get:

sin(φ) = ±√(1 - cos^2(φ))

So, knowing cosφ, you can find sinφ using the above formula.

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