# 1min force question to solve

1. Oct 12, 2005

### ultimate70192

alright this question involved a shopping cart up a ramp with an unknown angle and i have all the other variables but, cannot find the angle

.17 = .1cosx = sinx i need angle x, simple trig i believe but, i can't do it

2. Oct 12, 2005

### Staff: Mentor

Based on 0.17 = 0.1 cos x,

the x = cos-1 1.7

Based on 0.1 cos x = sin x,

x = tan-1 0.1

If one has developed the correct relationships, the x from either equation should be the same. If not there is something wrong.

3. Oct 12, 2005

### VietDao29

Just added to what Astronuc had said:
Since you have:
$$\forall x \in \mathbb{R}, \ \ \nexists x \ | \ \ \ |\cos x| > 1$$
So, what can you say about x?
Viet Dao,

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