In triangle ABC, AC = 5 cm, BC = 7.5 cm and angleA = angleC, then the length of AB is:
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Step-by-step explanation:
in right angled triangle b angle is 90°
a and c are the same is 45°
ac=5cm,bc=7.5cm,ab=?
sin45°=ab/ac
1/√2=ab/5
ab=5/√2
ab= 3.5355(appox)
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