Question

find the cartesian co-ordinate of the point (3,150degree)

Answer 1

30 degrees above negative y axis

y = 3 sin 30 = 1.5

x = - 3 cos 30 = -3 (sqrt 3)/2

( -1.5 sqrt 3 , + 1.5 )

Answer 2

r = 3, Ø = 150°

cos150 = x/3
x = 3(-√3/2) = -3√3/2

sin150 = y/3
y = 3sin150 = 3(1/2) = 3/2

the point is (-3√3/2 , 3/2)

Answer 3

that box you always included what does it mean@reiny it confusing me

Answer 4

It is a square root sign I suspect and it is not showing up in your font. Her answer is the same as mine.

Answer 5

yes thanks!!!