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Solve a practical right-angled-triangle problem

DIFFICULTYstandardchallengeexam
QUESTION TYPEMix of allChange
Find a length: set DFind a length: set EFind a length: set FNOWMix of allRecommended
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A flagpole casts a shadow on a horizontal sports ground. M is the tip of the shadow; L is the top of the flagpole; K is the foot of the flagpole

Triangle MLK: MK is horizontal; KL is vertical upwards; ML slopes upwards from M. Right angle at K. The angle from ray MK to ray ML is 41°. ML = x m; LK = 4 m. Not to scale.x m4 mMLK41°
MK horizontal; KL vertical. Not to scale
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What is the distance from the shadow tip to the top of the flagpole in metres, correct to 1 decimal place?

Format: 1 d.p.