Step-by-step explanation:
The sum of two opposite interior angles equals an exterior angle
50+?=115
?=115-50=65°
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Assuming the interest is simple interest, as opposed to compound interest,
<u>Answer:</u>
The correct answer option is C. S = 54.6°.
<u>Step-by-step explanation:</u>
We are given a right angled triangle with two known sides,
and
.
We are to find the value of the angle
.
For that, we will use sine.



S = 54.6°