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(3) In Δ ABC, if 2 A900, L C-30° and BC-12 cm, then find thelength of side AB and side AC.(4) Draw Δ PQR such that PQ 4.5 cm, QR = 6.5 cm, PR =Draw perpendicular bisectors of any two sides of the triangle.5,5 cm. |
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Answer» 3)angle A = 90° and angle C = 30°=> angle B = 90° - 30° = 60°=> BC is the hypotenuse = 12 cm longAB = 12/2 =6cm (sin30° = AB/hyp => 12sin30°=ABAB = 12×1/2 = 6AC = √(BC^2 - AC^2) = √(12^2 - 6^2) = √(144-36) = =√108 cm hit like if you find it usefulAC = 4 cmAB = 6.93 cm |
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