Area of a sector of angle θ with radius r is:
[227×r2×θ]360
[227×r×θ]360
[227×r2×θ]180
[227×r×θ]180
Area of a sector of angle θ with radius r =[227×r2×θ]360
Figure shows a sector of a circle of radius r cm containing an angle θ ∘. The area of the sector is A cm2 and perimeter of the sector is 50 cm. Prove that
(i) θ=360π(25r−1)
(ii) A=25r−r2
The area of a sector of angle θ∘ of a circle with radius R is
(a) 2πRθ180
(b) πR2θ180
(c) 2πRθ360
(d) πR2θ360
If we have ∠ABC as θ, reflex ∠ABC is equal to ________________.