Same chapter3 marksDifficulty: Medium
Construct a triangle ABC with BC = 6 cm, angle B = 60° and AB = 5 cm, then construct the perpendicular from A to BC.
Constructions
3 marksDifficulty: Medium
Construct a circle of radius 4 cm and, from a point 7 cm from its centre, construct the two tangents to the circle. State the length of each tangent.
Original Khojo Papers practice question — not from a past board paper.
Answer
Each tangent is √(49 − 16) = √33 ≈ 5.74 cm long.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Draw the circle, join the centre O to the external point P, draw a circle on OP as diameter, and join P to the two points where that circle cuts the given circle. Those lines are the tangents, because the angle in a semicircle makes the radius perpendicular to them.
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