A Four Meter Ladder Leans Against A Wall.If The Foot The Ladder Makes An Angle Of 80\Xc2\Xb0 With The Ground, How High Up The Wall Those The Ladder Re

A four meter ladder leans against a wall.if the foot the ladder makes an angle of 80Â° with the ground, how high up the wall those the ladder reach?

Use
$\sin( \alpha ) = \frac{opposite}{hypotenuse} \\ \sin( {80}^{o} ) = \frac{h}{4} \\ h = 4 \sin( {80}^{o} ) \\ h = 3.94m$

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