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?

c² = a² + b² - 2abCosC

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3

Beth yw rheol sin?

(a/sinA) = (b/sinB) = (c/sinC)

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4

Beth yw hafaliad arwynebedd triongl?

A = ½absinC

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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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