Tebygolrwydd

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8 Terms

1
Ongl mwyaf triongl?
Cyferbyn â’r ochr hirraf.
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2
Beth yw rheol cosine?
*c*² = *a*² + *b*² - 2*ab*Cos*C*
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3
Beth yw rheol sin?
(*a*/sin*A*) = (*b*/sin*B*) = (*c*/sin*C*)
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4
Beth yw hafaliad arwynebedd triongl?
A = ½*ab*sin*C*
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5
Beth yw ongl lem?
0°-90°
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6
Beth yw ongl aflem?
90°-180°
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7
Beth yw ongl atgyrch?
180°-360°
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8
Beth yw’r hafaliadau trigonometreg?
sin²θ + cos²θ = 1

tanθ = sinθ/cosθ
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