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January 25, 2015

January 25, 2015

Posted by **Sandy** on Sunday, June 6, 2010 at 11:07pm.

sin(5pi/12)

- trig -
**Reiny**, Sunday, June 6, 2010 at 11:12pmSome students can "think" better in degrees than radians, so 5π/12 rd = 75°

sin75 = sin(30+45)

= sin30cos45 + cos30sin45

= (1/2)√2/2 + (√3/2)(√2/2)

= (√2 + √6)/4

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