Maths wizz only thanks

[Digs]

HI,

I have the angle in degrees ( like 22,45,67,75), I also have the length of 100 for the bottom black line.


How do I calculate the LENGTH of X (ie dotted red line)

I forgotten SIN, COS, TAN..

Please advise...thanks

 

[garchbrooks]

Remember the rhyme about the indian princess named soh-cah-toa.

sin = opposite over hypotenuse (sin->soh)
cah = adjacent over hypotenuse (cos->cah)
toa = oppositive over adjacent (tan->toa)


Calculators do it in radians and not degrees, usually; make sure you convert from rad to deg, or deg to rad for the values.

 

[Banjo]

http://library.thinkquest.org/20991/geo/stri.html

 

[danthoma]

Tan(67) = X/100

100 * Tan(67) = X

 

[Gabfly1]

Just curious. Why would this thread be in the Trading forum?

 

[Digs]

Writing code for a super dooper angle thingy me gig

 

[Digs]

Ok its NOT working..

Tan(67) = X/100

100 * Tan(67) = X


I assume I convert the 67 to redians like


Angle = 67 / 180 * Math.PI

 

[Gabfly1]

Quote from Digs:

Writing code for a super dooper angle thingy me gig

Is it by any chance chart related? As in the angle of price action? (I hope not.)

 

[Digs]

NOPE pixels, but it is on chart, I converted to pixels

100 is pixels

 

[danthoma]

Quote from Digs:

Ok its NOT working..

Tan(67) = X/100

100 * Tan(67) = X


I assume I convert the 67 to redians like


Angle = 67 / 180 * Math.PI

Why convert to radians? Just make sure whatever you are using to calculate the tangent is in degrees. Either way it will be the same answer. It would be (67 * Pi) / 180 if you are trying to convert to radians.

http://mathworld.wolfram.com/Tangent.html