Question

Suppose a triangle has two sides of length 2 and 3 and that the angle

between these two sides is 60°. What is the length of the third side of the
triangle?
ОА. 7
В. 2
ооо
SUBMIT

Answer 1

Answer is √7 ( not A, not B)

Explanation:

BD/AB = sin 60°

BD/2 = √3/2

BD = √3

AD/AB = cos 60°

AD/2 = 1/2

AD = 1

CD = 3 -1 = 2

BC = √BD² + CD² = √(3 + 4) = √7