Question

Trigonmetry help please!! Find the coordinates for points A, B, C, D. I don't know where to start! Help!

Answer 1

Here's a picture.

Answer 2

the circle has radius 1 so the coordinates of A for example are found as follows
cos 65 = x/1
x = cos 65
similarly y coordinate is sin 65

Answer 3

i need help on that question to

Answer 4

so point A is (cos65,sin65)

Answer 5

Oh I see!

Answer 6

good

Answer 7

Same for B?

Answer 8

Same for B? (cos56,sin56)?

Answer 9

for B the x coordinate is negative so its (-cos56,sin 56)

Answer 10

Oh! Thank you, I completely understand now!

Answer 11

yw