Law of Sines (Sec 8-3) — Unit test Answers
Which of the following represents the measures of all angles coterminal with a –220° angle?
What is the approximate value of b, rounded to the nearest tenth? Use the law of sines to find the answer.
Use the law of sines to find the value of a.Law of sines:
An angle that shares the same sine value of an angle that measures radians is located where?
On a unit circle, the vertical distance from the x-axis to a point on the perimeter of the circle is twice the horizontal distance from the y-axis to the same point. What is sin?
A circle has a central angle measuring radians that intersects an arc of length 18 cm. What is the length of the radius of the circle? Round your answer to the nearest tenth. Use 3.14 for .
What is the area of triangle ABC? Round to the nearest square unit.
Heron’s formula: Area =
Triangle RST has sides measuring 22 inches and 13 inches and a perimeter of 50 inches. What is the area of triangle RST? Round to the nearest square inch.Heron’s formula: Area
Law of sines:
Two students stand 1 yard apart and measure their respective angles of elevation to the top of a tree. Student A measures the angle to be 57°, and Student B measures the angle to be 46°.Law of sines:
If a vertical line is dropped from the x-axis to the point (12, –9) in the diagram below, what is the value of sec ?
Angle B has a measure between 0° and 360° and is coterminal with a –865° angle. What is the measure of angle B?
An angle measuring (870n)° is in standard position. For which value of n will the terminal side fall on the y-axis?
Which measure is of an angle that is coterminal with a 95° angle?
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