Question: cos ( arcsin ( 1 3 5 ) ) They want me to solve it without a calculator. How do I do that? My professor

cos(arcsin(135))

They want me to solve it without a calculator. How do I do that?

My professor did something like those for this type of question:

tan(arccos(22))

cos(y)=cos(arccos(22))

cos(y)=22

Then created a right triangle and found out that the answer is one.

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