Question
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The second,third,and fourth term in the expansion (x a)n are also 240,720,1080
In the adjacent figure abcd is a square and triangle apb is an equilateral triangle. Prove that triangle apd congruent to triangle bpc
Maths
Nov. 1, 2018, 3:33 p.m.
Answer
Find the area of the segmentof a cricle given thattheangle of the sector is 120 and the radius of the circle is 21 cm .