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

Question

1246 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-03-27T16:06:03

arc cos(2) is invalid arc cos function. $|cos x|<=1$ . 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(arc tan(3)) equal?