Which trigonometric function would be used to find the length of this triangle's hypotenuse? a. sin 25° b. cos 25° c. tan 25°

B. cosine 25 degrees

because cosine = adjacent / hypotenuse

Cos 25° = .

Step-by-step explanation:

Given : A right angled triangle with angle 25° and side = 12 cm

To find : Which trigonometric function would be used to find the length of this triangle's hypotenuse.

Solution : We have given that adjacent side  = 12 cm ,

By the trigonometric ratio

Cos (theta) = .

Therefore, Cos 25° = .

Therefore, Cos 25° = .

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step-by-step explanation: