Question

What is the distance between `(-7 ,(3 pi)/4 )` and `(2 , (13 pi )/8 )`?

Answer 1

pl,use the formulaa below

Explanation:

`d = sqrt(( r_1)^2 +( r_2)^2 -2r_1r_2 cos(Φ_2 - Φ_1)`