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Take a triangle with internal angles α, β, and 90o. Let us call the hypotenuse ℎ. Which expression gives the length of side b, which is opposite to angle β?

Respuesta :

Answer:

b = h cos α.

Step-by-step explanation:

sin β = b / h

b = h sin β.

or cos α = b / h

so b = h cos α.

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