anonymous
  • anonymous
Geomerty
Geometry
jamiebookeater
  • jamiebookeater
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
|dw:1353250334560:dw|
anonymous
  • anonymous
i can't read it
anonymous
  • anonymous
|dw:1353251965656:dw|

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anonymous
  • anonymous
Sin 7,5° * sin 37,5 ° * sin 52,5° * sin 82,5°
anonymous
  • anonymous
use calculator
anonymous
  • anonymous
That is the point, you may not.
anonymous
  • anonymous
sin (90-x)=cos x, sin 2a = 2 sin a cos a Sin 7,5° * sin 37,5 ° * sin 52,5° * sin 82,5° = 1/4(2sin 7.5 cos 7.5 * 2 sin37.5 cos 37.t ) = 1/4(sin 15 sin 75) =1/8(2sin 15 cos 15) =1/8(sin 30) =1/16
anonymous
  • anonymous
Why do you use 1/4?
anonymous
  • anonymous
coz i need 2 in 2sin a cos a twice so i multiply and divide by 4
anonymous
  • anonymous
How do oyu get to sin 15? and sin 75?
anonymous
  • anonymous
sin 52.5 = sin(90-37.5) = cos 37.5 sin 82.5 = sin(90-87.5) = cos 7.5 2 sin 7.5 cos 7.5 = sin 15 same for sin 75

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