Find the exact value of cot(arcsin(12/13))

and
cos(arcsin(1.7/2))

I know that cos(arcsin(x))=sin(arccos(x))=sqrt(1-x^2). I'm having more difficulty with the first one. Please help! Thank you

3 answers

I got the second answer. Still confused on the first one.
draw your triangle You have the opposite leg=12 and the hypotenuse=13

So, the adjacent leg is √(169-144) = 5

cot(x) = 5/12
300
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