The value of the unknown side y for the given triangle will be 46.15.
What is the triangle?
In terms of geometry, a triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.
The sine law, also known as the law of sines, states that the ratio of a triangle's side length to the sine of its opposite angle is constant for all three sides. It's sometimes referred to as the sine rule.
We have to find the value of the side as y.
Apply Sin law in the given triangle,
SinA/a=SinB/b=SinC/c
Sin42/31=sin85/y
0.6691/31=0.9962/y
y=30.8822/0.6691
y=46.15
Thus, the value of the unknown side y for the given triangle will be 46.15.
Learn more about the triangle here:
brainly.com/question/25813512
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