- #1

- 9

- 0

Pretty sure i am wrong somewhere.

Did I add the vectors right?

## Homework Statement

Vector A is 100 units at 30 degrees.

Vector B is 200 units at 140 degrees.

Find the vector sum R: R=A=B

## Homework Equations

## The Attempt at a Solution

So this is where I am:

100cos30 =86.6

100sin30 = 50

200cos140= -153

200sin140= 128.55

Add the X and Y's

86.6 -153= -67

50+128.55 = 178.55

Using Pyth. Thereom -67^2+ 178.55^2 = 165.5

so

**R= 155.5 units**

Angle=

Tan (178.55/-67) then take the inverse Tangent =

**75 degrees**