plz answer dis question......

Find the value of sin 15^{o}= sin (π12 )

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- Jun 17th 2013, 10:05 PMbrosnan123Trigonometric Identities
plz answer dis question......

**Find the value of sin 15**^{o}= sin (*π*12 ) - Jun 17th 2013, 10:29 PMProve ItRe: Trigonometric Identities
You should know that . So

When we note that sine is positive in the first quadrant, and check for extraneous solutions which were obtained through squaring, we find that the solution we want is . - Jun 18th 2013, 02:26 AMmpx86Re: Trigonometric Identities
sin 15° = sin(45°-30°)

= sin 45°cos 30° - cos 45°sin 30°

= - Jun 18th 2013, 05:48 AMProve ItRe: Trigonometric Identities