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Abc is a right angled triangle ac equals 6cm bc equals 9cm work out the length of ab give your answer to 3 sig figures?
Wiki User
∙ 14y ago
If angle ACB is the right angle then ab is the hypotenuse. Then,
(ab)2 = 62 + 92 = 36 + 81 = 117
ab = √117 = 10.8 (3 sf)
If angle BAC is the right angle then ab is one leg of a right angled triangle with bc the hypotenuse.
92 = 62 + (ab)2 : (ab)2 = 92 - 62 = 81 - 36 = 45
ab = √45 = 6.71 (3 sf)
Wiki User
∙ 14y ago
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