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??????

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- Mar 18th 2012, 01:28 PMmathkid12past 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?????? - Mar 18th 2012, 01:57 PMskeeterRe: past paper question (encounter problems)
- Mar 18th 2012, 02:00 PMmathkid12Re: past paper question (encounter problems)
second one, 1/4 x (sorry i cant type the equations properly i dont know how??)

- Mar 18th 2012, 02:11 PMPlatoRe: past paper question (encounter problems)
- Mar 18th 2012, 02:50 PMmathkid12Re: past paper question (encounter problems)
thanks alot