Answer:
In ΔECB ,
∠ECD = ∠EBC + ∠BEC (∵ Exterior Angle Property of a triangle)
⇒ ∠BEC = ∠ECD - ∠EBC ................. eqn.1
In ΔABC ,
∠ACD = ∠BAC + ∠ABC (∵ Exterior Angle Property of a triangle )
⇒ 2∠ECD = ∠BAC + 2∠EBC
⇒ ∠BAC = 2∠ECD - 2∠EBC = 2(∠ECD - ∠EBC)
( Putting eqn.1 here )
⇒ ∠BAC = 2∠BEC (∵∠BEC = ∠ECD - ∠EBC)
Answer:
<h3>d = 8.6</h3><h3>d = √74</h3>
Step-by-step explanation:
Answer:
Step-by-step explanation:
Area of circle =πr² and r = s/2
Area of the shaded region = area of square - area of the circle
A = s² + πr²
Answer:
a) next one is previous one -3
b) next one is 3 times previous one
