Exercise – 12.2 Q1. Find the area of a sector of a circle with radius 6 cm if angle of the sector is 60º. Solution: Radius (r) = 6 cm θ = 60° Area of Minor Sector = (θ /360) × π r² ⇒ Area of Minor Sector = (60/360) × 22/7 × (6)² ⇒ Area…
Theorem 10.2 prove that ” The Lengths of tangents drawn from an external points to a circle are equal.” Given: C ( O , r ) P = External point from the circle P A and P B are tangents From External Point P Construction: Join External Point P , Point of contacts A and…
Tangent to a Circle : a tangent to a circle is a line which touches or intersect the circle at only one point. A tangent to a circle is a special type of secant ,In which both intersect points of secant are coincide. Theorem 10.1 Prove that ” The tangent at any point of a…