Help with Combining Oblique Vectors

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The discussion revolves around the combination of oblique vectors R, Q, and S, with specific magnitudes and angles. The initial calculations for the components of each vector were performed, leading to a resultant vector calculation. An error was identified in the handling of vector S, where the x-component was mistakenly considered zero instead of 2.15. Correcting this oversight resulted in the correct magnitude and angle for the resultant vector. The final answer confirmed was 1.67 at an angle of 99.68°, highlighting the importance of accurately accounting for all vector components.
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Homework Statement


R = 3.5N[350] Q = 2.75N[125] S = 2.15N[0]

R + Q - S

The Attempt at a Solution



Finding x and y for 3.5N[350]
Sin80 = y/3.5 = -3.45
Cos80 = x/3.5 = 0.61

y = -3.45
x = 0.61

Finding x and y for 2.75N[125]
Sin35 = x/2.75 = -1.58
Cos35 = y/2.75 = 2.25

x = -1.58
y = 2.25

Finding x and y for 2.15[0]
x = 0
y = 0
(Since it's at 0)

Rx = 0.61 - 1.58
Rx = -0.97

Ry = -3.45 + 2.25
Ry = -1.2

a^2+b^2 = c^2
c=1.54

Tanθ=0.97/1.2
θ=39°

When I check the answer, it shows 1.67[99.68°] instead of my answer 1.54[39°].

What did I do wrong?
 
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Solved it...forgot that 2.15[0] had a x..which is 2.15.
 
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