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03-05-2020
Mathematics

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For what value of x is sin x = cos 19º, where 0°< x < 90°?

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03-05-2020

Answer:

71°

Step-by-step explanation:

The cosine of an angle is equal to the sine of its complement:

cos(19°) = sin(90° -19°) = sin(71°)

Comparing to the given expression, we see that x = 71°.

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