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HELP HURRY! Find the length of the ladder.

HELP HURRY! Find the length of the ladder.-example-1

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This triangle has a side length and an angle involved, therefore you use trigonometry.

Remember these trigonometric functions:
sinθ= opposite/hypotenuse
cosθ= adjacent/hypotenuse
tanθ= opposite/adjacent

θ represents the angle.


1.4 cm is the adjacent side, because it’s next to the angle 70 degrees. x is the hypotenuse, because it’s opposite the right angle and it’s the longest side.

The function that involves the adjacent and hypotenuse side is cos.

cosθ= adjacent/hypotenuse
cos70=1.4/x
x(cos70)=1.4
x=1.4/cos70

put 1.4/cos70 into your calculator, and you should get 4.1cm to one decimal place.

Answer: x= 4.1 cm (to one decimal place)

(so sorry if i’m wrong!!!)
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