we know that
In a right triangle
the value of the cosine is equal to
and the value of the sine is equal to
so
<u>First case</u>
substitute
therefore
The first case is the solution
<u>Second case</u>
substitute
therefore
The second case is not the solution
<u>Third case</u>
<u>Note The hypotenuse cannot be smaller than the adjacent leg or the opposite leg. This problem has errors </u>
substitute
therefore
The third case is not the solution
the solution is the first case
see the attached figure
Answer:
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