# Two vectors from an angle of 110°. One of the vectors is 20 units long and makes an angle of 40° with the vector sum of the two. Find the magnitude of the second vector and of the vector sum?

##### 1 Answer

Jan 15, 2018

13.71 units

#### Explanation:

If the sum of two vector

Here,

Putting all the values we get,

derivation of the formula is given below