Sin 45 using the right isoceles triangle to prove
and using Pethagoras's theorem
1, 1, ึ2 are the length of sides of the triangle.
Sin 30 and Sin 60 using the half of equalateral triangle with its height to prove
and using Pethagoras's theorem
1, 2,ึ 3 are the lenght of sides of the triangle.
I HOPE YOU UNDERSTAND
OWEN!
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