A guide into how to use law of sines or cosines would be greatly appreciated.

RS = 22.5 feet, RT = 12.5 feet, and <R =

Step-by-step explanation:

Cosine rule can be applied only when given the three sides of a triangle, or two sides and an included angle. Otherwise, sine rule is applied.

i. <R + <T + <S = 180 (sum of angles in a triangle)

<R + 116 + 30 = 180

<R = 180 - 146

    = 34

<R =

In the given question, since we have two angles and one side we apply the sine rule.

ii. =

=

RS =

    = 22.5021

RS = 22.5 feet

iii. Also,

=

=

RT =

    =

    = 12.5179

RT = 12.5 feet

Thus,

RS = 22.5 feet, RT = 12.5 feet, and <R = .

answer: what do you mean