Use only cos rule to prove this = : :

In this case i use cos rule but, after few step i cannot simplify, but i have finish this sum with sine rule, If anyone have a idea to do simplify this sum through cos rule>>>>>>

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- Oct 21st 2013, 06:53 PMsrirahulanTrig
Use only cos rule to prove this = : :

In this case i use cos rule but, after few step i cannot simplify, but i have finish this sum with sine rule, If anyone have a idea to do simplify this sum through cos rule>>>>>> - Oct 22nd 2013, 02:00 AMchiroRe: Trig
Hey srirahulan.

Since cot A = cos(A)/sin(A), what are you using to calculate the sines if you can only use the cosine rule? - Oct 22nd 2013, 09:04 AMsrirahulanRe: Trig
i cannot understand, what you say?

- Oct 22nd 2013, 10:16 AMSlipEternalRe: Trig
- Oct 22nd 2013, 05:52 PMsrirahulanRe: Trig
Great Thanks For you>>>>