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The Trigonometric function that can be used to find the value of x is; x = 12/tan(25)

Trigonometric functions

The triangle given is a right triangle and the angle given is 25°.

The side opposite the given angle is; 12 units.

Hence, it follows from Trigonometry that;

  • Tan 25 = 12/x

Hence, x = 12/tan(25).

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