What does $sin(arccos(2))+3sec(arc csc(12))$ equal?

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Answer 1 · 2016-07-17T09:28:30

Invalid arc cos 2 makes the expression invalid.

arc cos 2 is the angle whose cosine is 2. Any sine or cosine value is

numerically less than 1. So, arc cos 2 is an invalid arc cosine.

What does sin(arccos(2))+3sec(arc csc(12))sin(arccos(2))+3sec(arc csc(12)) equal?