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Flussdiagramm

Triangle formulae

Nixie Warren Maths GCSE Englisch

Flowchart of triangle formulae: trigonometry, Pythagoras, cosine rule, sine rule and area of triangle

Flowchart: triangle formulae

Inhalt des Flussdiagramms

  1. Is it a right-angled triangle?

  2. Does the question include angles?

  3. Trigonometry

    sinθ = opp/hyp

    cosθ = adj/hyp

    tanθ = opp/adj

  4. Pythagoras

    a^2 + b^2 = c^2

    c^2 - b^2 = a^2

    c^2 - a^2 = b^2

  5. Cosine rule

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

    A = Cos^-1 ((b^2 + c^2 - a^2)/2bc)

  6. Sine rule

    SinA/a = SinB/b = SinC/c

    a/SinA = b/SinB = c/SinC

  7. Area of triangle

    Area = 1/2*a*b*SinC

  8. No. of sides and angles

  9. Yes

  10. No

  11. Yes

  12. No

  13. 3 sides

    1 angle

  14. 2 sides

    2 angles

  15. 2 sides + angle in between

Informationen

Beschreibung
Which formula to use on a triangle depending on what information is given.
Erstellt von
Nixie Warren
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