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January 31, 2015

January 31, 2015

Posted by **Antia** on Monday, January 23, 2012 at 8:57pm.

a) sin(pi/6)

sin=cos(pi/2 - pi/6)

What do I do next?

- Math -
**Reiny**, Monday, January 23, 2012 at 10:47pmwhat is π/2 - π/6 ??

= 3π/6 - π/6 = 2π/6 = π/3

so sin(π/6) = cos(π/3)

check:

sin(π/6) = sin 30° = 1/2

cos(π/3) = cos 60° = 1/2

All is good!

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