Find the marked angle in deg Your answers must be written and the length of the

Question

Find the marked angle in deg Your answers must be written and the length of the unknown s decimals and accurate to within 0.1. side of the triangle shown at the right. d= 6.9 2. Find the marked angle in degrees and the length of the unknown side of the triangle shown at the right. Your answers must be written as decimals and accurate to within 0.1 25.6 d- 13 3. Your answers must be written as decimals and accurate to within 0.1. 46.6 41 Find the marked angle in degrees and the length of the unknown side of the triangle shown at the right. Your answers must be written as decimals and accurate to within 0.1. 17.5 20.2

Explanation / Answer

1) applying law of cosines to find the d

d^2 = 14.9^2 + 6.9^2 - 2 ( 14.9)(6.9) cos 90

d = sqrt ( 14.9^2 + 6.9^2 )

d = 16.4

now applying law of sines to find the unknown angle t

6.9 / sin t = 16.4 / sin 90

sin t = 6.9 * sin 90 / 16.4

t = 24.9 degrees

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