B. C. D and E are points on a circle. 4BC and AED are straight lines.
AB = 8 cm. AE = 6 cm and ED = 5 cm
Angle BAE = 25°
(a) Calculate the length of BD.
Give your answer correct to 3 significant figures.
[3]
(b) Calculate the length of AC

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.