Mathematics, 03.02.2020 17:50 koranbutterton

Suppose a triangle has sides a, b, and c, and that a^2 + b^2 < c^2. let be the measure of the angle opposite the side of length c. which of the following must be true?

choose all that

a. cos theta < 0

b. cos theta > 0

c. the triangle is not a right triangle.

d. a^2 + b^2 - c^2 = 2abcos theta

Answers: 3

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Suppose a triangle has sides a, b, and c, and that a^2 + b^2 < c^2. let be the measure of the an...