Question

find the value of K so that 4x+Ky=15 makes an angle of 60° with y-axix​

Answer 1

Step-by-step explanation:

answer is in the attached file

Answer 2

Answer:

Step-by-step explanation:

4x+Ky=15

Differentiate w.r.t y

4x'+K=0

tan 60°= √3

here x'=-K/4

x'= tan 60°

-K/4 = √3

then K =-4√3