Question

Choose the point on the terminal side of theta. For theta= 45degrees

Help please...I'm so confused Ill just ask again :/

Answer 1

what course is this ?

Answer 2

Pre Calc

Answer 3

Honours

Answer 4

see this video for background
http://www.khanacademy.org/math/trigonometry/basic-trigonometry/unit_circle_tut/v/unit-circle-definition-of-trig-functions-1

it is short.

Answer 5

ive watched it...i still didnt get it

Answer 6

sorry :/

Answer 7

where do we start measuring an angle from ?

Answer 8

uhm...the initial ray?

Answer 9

see 1 minute in ...

Answer 10

*side

Answer 11

...I don't understand

Answer 12

watch the first 3 minutes.... skip in 1 minute, and watch the next 2 minutes.
it explains it more clearly than typing here.

Answer 13

ok...

Answer 14

but using a unit circle...the largest coordinate you can have is 1

Answer 15

yes

Answer 16

but I know the answer..and its not 1

Answer 17

i just need to know how to get to the angle

Answer 18

the answer is (2,2)

Answer 19

answer

Answer 20

The question does not give the radius... so I assume r = 1

find the (x,y) values for the point on the unit circle 45 degrees off of the x-axis

it will be (cos(45), sin(45))
if that answer does not match any of your choices, you can "scale" it by multiplying the x and y by the same number... (which would be r if you know it)

Answer 21

Ok...thanks for trying...IDK if i really get it. But thanks for trying

Answer 22

Did they give any more info? because though (2,2) is on the terminal side, so is (1,1), (3,3), (18.11, 18.11), and an infinite other pairs also work, unless
they tell you how far to go along the terminial side