1.

Let ABC be a right-triangle where AB= 6 cm, BC= 8 cm, and B = 90° . BD is the perpendicular from B on AC. The circle through B, C, and Dis drawn. Given below are the steps of construction of a pair of tangents from A to this circle. Which of the following steps is incorrect? Step 1: Draw a line segment AB = 6 cm and BC = 8 cm perpendicular to each other. Join AC. Step 2: Draw the perpendicular bisector of BC which meets BC at O. Step 3: With O as centre and OB as radius. draw a circle which intersects AC at D. Thus BD bot AC. Step 4: With A as centre and AO as radius draw an arc cutting the circle at M. Step 5: Join AM. Thus AB and AM are the required tangents.

Answer»

STEP 2 only
Step 3 only
Step 4 only
Step 5 only

Answer :C


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