Cosine inverse?

[not_l33t]

Is it possible to do a cos-1 in Turing. I need it for a program that I am creating for finding the degrees of angle and telling if its a right angle triangle or not. I am simply going to use the elseif and else commands. So can you guys help me with the cosine.

[Pickles]

isnt that 1/cos ?

[not_l33t]

Pickles wrote:

isnt that 1/cos ?

That don't work.

[AsianSensation]

arccosd or arccos, depending on whether you want it in radian or degree form.

[not_l33t]

AsianSensation wrote:

arccosd or arccos, depending on whether you want it in radian or degree form.

Dude you're my hero.

[not_l33t]

Quote:

var a, b, c : real
var x1, x2, x3, y1, y2, y3, t1, t2, t3 : real
var u1, u2, u3, i1, i2, i3 : real
put "Enter the length of the first side of the triangle."
get a
put "Enter the length of the second side of the triangle."
get b
put "Enter the length of the third side of the triangle."
get c

x1 := -2 * (b) * (c)
x2 := -2 * (a) * (c)
x3 := -2 * (a) * (b)

y1 := b ** 2 + c ** 2
y2 := a ** 2 + c ** 2
y3 := a ** 2 + b ** 2

t1 := a ** 2 - y1
t2 := b ** 2 - y2
t3 := c ** 2 - y3

u1 := t1 / x1
u2 := t2 / x2
u3 := t3 / x3

i1 := arccosd (u1)

i2 := arccosd (u2)

i3 := arccosd (u3)


put "First angle is: ", i1
put "Second angle is: ", i2
put "Third angle is: ", i3

Anyone in TDSB taking Grade 10 TIK will be thanking me a lot.

[not_l33t]

code:

var a, b, c : real var x1, x2, x3, y1, y2, y3, t1, t2, t3 : real var u1, u2, u3, i1, i2, i3 : real put "Enter the length of side 'a' of the triangle."     get a     put "Enter the length of side 'b' of the triangle."     get b     put "Enter the length of side 'c' of the triangle."     get c     x1 := -2 * (b) * (c)     x2 := -2 * (a) * (c)     x3 := -2 * (a) * (b)     y1 := b ** 2 + c ** 2     y2 := a ** 2 + c ** 2     y3 := a ** 2 + b ** 2     t1 := a ** 2 - y1     t2 := b ** 2 - y2     t3 := c ** 2 - y3     u1 := t1 / x1     u2 := t2 / x2     u3 := t3 / x3     i1 := arccosd (u1)     i2 := arccosd (u2)     i3 := arccosd (u3)     put skip     const z7:= 90            if i1 = z7 then     put "This is a right angle triangle."    end if        if i2 = z7 then    put "This is a right angle triangle."    end if        if i3 = z7 then    put "This is a right angle triangle."    end if             put "Angle A is: ", i1     put "Angle B is: ", i2     put "Angle C is: ", i3

I am having problems exiting this program. I want the program to exit when one of the angle is 90 degrees.

Put these values in as they make a right angle triangle when it asks you when it runs: 1, 2, 1.732050808.

[not_l33t]

Anyone?