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Use a special right triangle to write sin 30º as a simplified fraction.
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Use a special right triangle to write sin 30º as a simplified fraction.

User Chad Kennedy
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this is a right angled triangle with hypotenuse length 2 and the legs are of length 1 and sqrt3.
the 2 angles other than 90 degrtees are 30 and 60 degrees.
The 30 degree angle is opposite the leg of length 1 so it's sine
is opp/hyp = 1 /2
User Mony
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