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OpenStudy (anonymous):
why is a 45 45 90 triangle important for the unit circle?
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OpenStudy (anonymous):
@dumbcow
OpenStudy (dumbcow):
similar to what the prev post said... for a unit circle to determine what sin45 and cos45 you use the special 45-45-90 right triangle which says that the side ratios are 1:1:sqrt2 setting hypotenuse to 1 yields sides of sqrt2/2 thus sin45 = cos45 = sqrt2/2
OpenStudy (dumbcow):
|dw:1359327581798:dw|
OpenStudy (anonymous):
|dw:1359328598357:dw| correct?
OpenStudy (anonymous):
oh yes you wrote that, silly me :P
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