Answer
.823
Work Step by Step
Using triogonmetry, we find:
$$sin\theta = \frac{o}{h} =\frac{6}{\sqrt{117}}=.555$$
And:
$$cos \theta = \frac{a}{h} =\frac{9}{\sqrt{117}}=.823$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.