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**1. Homework Statement**

A vector is given by R = 2.00 i + 1.70 j + 2.81 k.

(a) Find the magnitudes of the x, y, and z components.

x = 2

y = 1.70

z = 2.81

(b) Find the magnitude of R.

3.85

(c) Find the angle between R and the x axis.

?

Find the angle between R and the y axis.

?

Find the angle between R and the z axis.

?

**3. The Attempt at a Solution**

I have the correct answers for part (a)& (b) but very confused on (c) what I needed to do to find angle