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Convert the angle in radians to degrees.
1. Solve the right triangle in the figure below if A = 51.4° and c = 57.1. Round lengths to one decimal place and express angles to the nearest tenth of a degree.
A. B = 38.6°, a = 44.6, b = 35.6
B = 51.4°, a = 35.6, b = 44.6
B = 38.6°, a = 35.6, b = 44.6
B = 51.4°, a = 44.6, b = 35.6
2. Find the radian measure of the central angle of a circle with radius r = 1.8 meters that intercepts an arc s = 4.14 meters.
0.9 radians
2.3 radians
1.6 radians
0.56 radians
3. In the right triangle below, C is the right angle and the two sides are given. Find cos θ. Give an exact answer with a rational denominator.
4. Which of the following equations is true about the right triangle shown above?
5. use a calculator to find the value in radians of the expression below. Round your answer to two decimal places.
sin−1 (−0.1)
1.67
–5.74
95.74
–0.10
