What does $sin (arccos (2)) - 3 sec (a r c tan (3))$ $sin(arccos(2))-3sec(arc tan(3))$ equal?

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Answer 1 · 2016-03-27T16:06:03

arc cos(2) is invalid arc cos function. $| cos x | \leq 1$ $|cos x|<=1$ . So, there is no arc cos for which cosine is 2.

Read arc cos as 'the angle whose cosine is '.

What does sin(arccos(2))-3sec(arc tan(3))sin(arccos(2))−3sec(arctan(3))sin(arccos(2))-3sec(arc tan(3)) equal?