Thread: past paper question (encounter problems)

Given that delta (Δ) is an acute angle such that cos delta(Δ)= 1/4x
find the expression for sin 2delta(Δ) in terms of x


how to do such a question??????

Originally Posted by mathkid12

Given that delta (Δ) is an acute angle such that cos delta(Δ)= 1/4x
find the expression for sin 2delta(Δ) in terms of x


how to do such a question??????

or ???

second one, 1/4 x (sorry i cant type the equations properly i dont know how??)

Originally Posted by mathkid12

second one, 1/4 x (sorry i cant type the equations properly i dont know how??)

Then

Learn some basic LaTeX.
[TEX]\cos(\Delta)=\frac{x}{4}[/TEX] gives .

thanks alot