Triangles Flashcards by n s

Q

What happens with a 30-60-90 triangle?

A

Long leg is sqrt3 times the short leg

Hypotenuse is 2 times the short leg

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Q

What happens with a 45-45-90 triangle?

A

Hypotenuse is sqrt 2 times th leg length

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Q

Cos

A

Adjacent / Hypotenuse

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Q

Sin

A

Opposite / Hypotenuse

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Q

Tan

A

Opposite / Adjacent

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Q

Law of sines

A

sinA/a sinB/b sinC/c

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Q

Law of cosines

A

a^2 = b^2 +c^2 - 2bc * cosA

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Q

Angle of cosines

A

CosA = b^2+c^2-a^2/2bc

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