Keita left camp three days ago on a journey into the jungle. The three days of his journey can be described by displacement (distance and direction) vectors d1, d2, and d3.

d1=(7,8)

d2=(6,2)

d3=(2,9) (Distances are given in kilometers, km.)

How far is Keita from camp at the end of day three?(Round your final answer to the nearest tenth.) 24.2km

What direction is Keita from camp at the end of day three?

Keita is  24.2 km far from the camp at the end of day three

Thus Keita  is at 51.71° to the x-axis direction

Explanation:

Given that:

the displacement vector for Keita's Journey are :

d1=(7,8)

d2=(6,2)

d3=(2,9)

Then the final displacement  

How far is Keita from camp at the end of day three?

i.e

Keita is  24.2 km far from the camp at the end of day three

What direction is Keita from camp at the end of day three?

From the diagram attached below, Taking the tangent of the coordinates; we have:

tan θ =

tan θ =

tan θ = 1.2667

θ = tan⁻¹ (1.2667)

θ = 51.71°

Thus Keita  is at 51.71° to the x-axis direction

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