What is the measure of -- to the nearest hundredth
qr
of a centimeter?

We are given a right triangle in which the hypotenuse is measuring 12.38 cm and the angle between the height and the hypotenuse is equal to 49 degrees. Using sine function, we use sin 49 = QR / 12. 36 cm. QR using a calculator is equal to 9.33 cm

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.