What is the distance between #(-7 ,(3 pi)/4 )# and #(2 , (13 pi )/8 )#? Trigonometry The Polar System Polar Coordinates 1 Answer P dilip_k Feb 20, 2016 pl,use the formulaa below Explanation: #d = sqrt(( r_1)^2 +( r_2)^2 -2r_1r_2 cos(Φ_2 - Φ_1) # Answer link Related questions What are Polar Coordinates? How do you find the polar coordinates of the point? What is the difference between a rectangular coordinate system and a polar coordinate system? How do you graph polar coordinates? What careers use polar coordinates? How do you plot the point #A (5, -255^\circ)# and the point #B (3, 60^\circ)#? What does a polar coordinate system look like? How do you find the distance between 2 polar coordinates? For the given point #A(-4, frac{pi}{4})#, how do you list three different pairs of polar... How do you find the rectangular form of #(4, -pi/2)#? See all questions in Polar Coordinates Impact of this question 1354 views around the world You can reuse this answer Creative Commons License