Posted by **kate** on Monday, August 8, 2011 at 10:29pm.

Find cos x if sin x cot x = 4.

I got 4 but isnt it impossible for cos to equal 4? Isnt it only supposed to range from -1 to 1?

the answer choices are

1)4

2)2

3)1

4)sqrt 2

- math -
**MathMate**, Monday, August 8, 2011 at 10:39pm
You're quite right!

None of the answers can be correct, since they all exceed 1.

Could you check the question?

- math -
**kate**, Monday, August 8, 2011 at 11:21pm
Thanks for answering! and yes i think there is an error in the question

- math -
**MathMate**, Monday, August 8, 2011 at 11:33pm
In fact, (3) is a feasible answer, but does not suit the given question.

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