How can you determine if an angle is a right angle?

Mathematics

1 answer:

Aliun [14]3 years ago

8 0

Use pythagoras
in a triangle
h^2 = a^2 + b^2 if right angle.

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$~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill$

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