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tom wnts 2 claen da upstairs window of hiz house. he decides 2 buy a ladder
da ladder haz 2 reach exactly 3.8metres up the wall of da house
to be safe, da ladder haz 2 be at an angle of 72 (degrees) to da ground
wat length of ladder shud tom buy?
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You need to so trigonometry with a right angled triangle. If you sketch it out and then put in the values you have and what you need to work out it should be pretty simple.
ermmm k thnx ;)