easy as 1 2 3...thats how u can remember it
Sin is square routes of 1 2 3 divided by 2 sequentially
Sin 30 (pi/6): 1/2 (since square of 1=1)
Sin 45 (pi/4): (square of 2)/2
Sin 60 (pi/3): (square of 3)/2
Cos is square of 3 2 1 (Opposite of sin)/2
Cos 30 (pi/6): (square of 3)/2
Cos 45 (pi/4): (square of 2)/2
Cos 60 (pi/3): 1/2
Tan=sin/cos
Tan 30 (pi/6): 1/2 divided by square of 3/2=1/square of 3 or square of 3/3
Tan 45 (pi/4): square of 2/2 divided by square of 2/2=1
Tan 60 (pi/3): square of 3/2 divided by 1/2=square of 3
So to answer your question:
square of 3
2
Then you should be moving onto determining other parts of the circle.
There are 4 quadrants. going from top right to the bottom right moving counter-clockwise.
Quad 1=Between 0-90 (pi/2)
Quad 2=Between 90 (pi/2)- 180 (2pi/2===pi)
Quad 3=Between 180 (pi)- 270 (3pi/2)
Quad 4=Between 270 (3pi/2) -360 (4pi/2===2pi)
[IMAGE]
___Quad 2_____|____Quad 1__
.....Quad 3.......|......Quad 4
Just remember=All Students Take Calculus
or ASTC---All Sin Tan Cos---This refers to when a degree is positive.
If you are required to find a degree of 60 then all will be positive
If you are asked to find 150...then move from 0(x axis of quad 1) to pi/2 and u will land in 2nd quadrant. Subtact 180-150=30. Therefore...
Sin 150 or 6pi/5=1/2
Cos 150=NEGATIVE square of 3/2
Tan 150=NEGATIVE square of 3/3
Find my aim from silent or spike if you want more help.