Triangles Flashcards by Izzy C-B | Brainscape

Q

Area of a triangle

A

Area= 1/2abSinC

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Q

Want a side:

Know 2 sides and a angle between

A

a2=b2+c2-2bcCosA

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Q

Want a side:

Know 2 angles and a side

A

a b
—— = ——-
SinA SinB

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Q

Want an angle:

Know 3 sides

A

b2+c2-a2
Cos A= ————-
2bc

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Q

Want an angle:

Know 2 sides and an angle not between

A

SinA SinB
——- = ———-
a. b

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