Question

I need help trigonometry

Answer 1

Angle SRT = 32 degrees

RS = 15.7 cm

ST = 13.9 cm

Explanation:

The sum of the angles in a triangle = 180 degrees

To find angle R -> 120+28+r=180, r = 32 degrees

You could solve this by using the law of sines or the law of cosines

Law of sines:
`(sin A)/(A) = (sin B)/(B) = (sin C)/(C)`

To find RS:
`(sin 120)/(25.6) = (sin 32)/(RS)`, which gives you about 15.66 (rounded to nearest tenth = 15.7 cm)

To find ST:
`(sin 120)/(25.6) = (sin 28)/(ST)`, which is about 13.87 (rounded to nearest tenth = 13.9 cm)