Find the value of the missing side of a triangle practice

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Find the value of the missing side of a triangle practice

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    2021-09-14T23:11:46+00:00

    There are many formulas to finding a side of a triangle.

    Be sure to understand the differences between a right-angled triangle and an irregular-shaped triangle.

    Right-angled triangle
    Two sides must be known.
     {a}^{2}  =  {b}^{2}  +  {c}^{2}
    where ‘a’ squared is the hypotenuse of the triangle.

    To find the non-hypotenuse side, the formula can be rearranged to
     {b}^{2}   =   {a}^{2}  -  {c}^{2}
    ‘b’ can be any non-hypotenuse side.

    Non-right angled triangle.
    Cosine rule
    Two sides and an angle must be know.
    a =  {b}^{2}  +  {c }^{2}  - 2ab \cos(angle \: facing \: a)
    That is just a few of the formulas I have listed.

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