Using Euler's Formula, you use
(cos(x) + i sin(x))^n = cos (nx) + i sin(nx)
Now you let n=3
(cos(x) + i sin (x))3 = cos(3x) + i sin (3x)
(cos(x))3 + 3(cos(x))2 * i sin(x) + 3cos(x) * i2 (sin(x))3 = cos(3x)+ i sin(3x)
(cos(x))3 + i(3sin(x)(cos (x))2) - 3cos(x)(sin(x)2) - i(sin(x))3 = cos (3x) + i sin(3x)
Now only use the terms with i in them to figure out what sin(3x) is...
3sin(x)(cos(x))2 - (sin(x))3 = sin(3x)
Hope this helps! :D
formula units
-- Take the formula for the area of the circle in terms of the radius . . . A = (pi) R2-- Solve that formula for 'R'. You'll then have a formula for the radius in terms of the area,which is exactly what you're looking for.
moles
Simple ratio among the combining ions (emperical formula)
Yes the great circle formula is the same formula for any other circle.
formula
F=A/P fapfapfapfap
It is formula of which the plural is formulae
There is no single formula since the models that are used vary quite considerably in terms of their complexity.
ZnCl2
it means the pack in a set of work
A=v/tx1/4