review

Find the number of distinct triangles with the measurements a=1 b=2 c=31

A. 0

Find m<c Round the answer to the nearest tenth.

A. 46.1

Explain how the trigonometric area formula can be used to find the area of a equilateral triangle if you are only given the length of one side.

Responses may vary but should include some or all of the following information: The trigonometric area equation is A = (1/2)absinC. Since all of the sides of an equilateral triangle have the same length, a and b are equal, so the given side length can be plugged in for both. Also, since we are dealing with an equilateral triangle, we know that all of the angles are also equal. Since the angles must sum to 180 degrees, they must each be 60 degrees; this can be plugged in for angle C, allowing us to find the answer.

Solve TRIANGLE OMN. Round the answer to the nearest tenth.

B.

Find the value of x. Round the answer to the nearest tenth, if needed.

B. 6

Solve for X. Round the answer to the nearest tenth.

B. 8.2

Find the value of x.

C. 10