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-   -   Two equals Sides. One Angle. In a CIRCLE. (http://mymathforum.com/algebra/37724-two-equals-sides-one-angle-circle.html)

yogazen2013 August 24th, 2013 02:19 PM

Two equals Sides. One Angle. In a CIRCLE.
 
Hi, To obtain the area of a a triangle inside a circle with radius 12. and angle pi/3 ( 60deg). A= 1/2 *b*h . = 1/2*12* h

h= tan(30deg)*12 = this is correct> we can intersect pi/3 and use tan to equate the height?

Zen.

slipjack August 24th, 2013 02:30 PM

I just imagine a right triangle with angles 30, 60 and 90.
cos(30) = ?3/2 = h/12 i.e. h = 6?3.
? x 12 x 6?3 = 6?3 = 36?3.


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