Question

E trigonometry to work out the size of
angle x.

Answer 1

Check the picture below.

`tan(x) =\cfrac{\stackrel{opposite}{10}}{\underset{adjacent}{4}}\implies tan(x)=\cfrac{5}{2}\implies x=tan^(-1)\left( \cfrac{5}{2} \right)\implies x\approx 68.20^o`

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