Hi.I am having trouble solving the following quesions:

Q1

Q2

Q3

Thanks

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- July 31st 2012, 01:00 AMhacker804Double and half angle identites help
Hi.I am having trouble solving the following quesions:

Q1

Q2

Q3

Thanks - July 31st 2012, 01:38 AMProve ItRe: Double and half angle identites help
- July 31st 2012, 01:50 AMProve ItRe: Double and half angle identites help
- July 31st 2012, 03:31 AMhacker804Re: Double and half angle identites help

Explain this please.How did you complete the square? - July 31st 2012, 03:39 AMProve ItRe: Double and half angle identites help