Question

The horizontal and vertical components of a force are 8N and 15N respectively. The
force is

Answer 1

Answer:

it is so simple

Explanation:

u just do it right this

Answer 2

Answer:

The force is 17N

Explanation:

The resultant of two vectors:

P  and  Q is given by 

R=P2+Q2+2PQcosθ

where, P and Q are magnitudes of two vectors and θ is the angle between two vectors.

Here θ=?  P=8N  Q=15N  R=17N

Therefore,

17=82+152+2×8×15cosθ

289=64+225+240cosθ

289=289+240cosθ

289−289=240cosθ

cosθ=0

cosθ=cos90

θ=90°