Two chords AB and CD intersect P inside the circle.lf AB = 13cm and PC = 12 cm PD = 3 cm a) Write the relation between PA, PB, PC and PD b) If PA = r form an equation c) Find the lengths of PA and PB17) The sum of the first n terms of the arithmetic sequence 7,9,11,13... is 40.
a) Form a second degree equation using this condition.
b) How many terms make the sum 40 ?
b
c) Find n in another method.
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