Triangles Flashcards by Reneica Reid

Q

Area of right angle triangle

A

1/2bh

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Q

Area of triangle 1

A

1/2ab sinC

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Q

Area of triangle 2

A

________________
/s(s-a)(s-b)(s-c)

s=a+b+c/2

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Q

Pythagoras Theorem

A

a^2+b^2=c^2

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Q

Trigonometric Ratios- Sine

A

Sin°=opposite/hypotenuse

a/SinA=b/SinB=c/SinC

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Q

Cosine

A

Cos°=adjacent/hypotenuse

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

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Q

Tangent

A

Tan°=opposite/adjacent

Sin°/Cos°=Tan°

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Q

Angle of Elevation and Depression

A

°= tan-1(opposite/adjacent)

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Q

Bearings

A

3 figure angle found using Sin° and Cos°

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