Please solve q nov16

Please solve q nov16 15. In triangle ABC; angle ABC = 900 and P • a point on AC such that ZPBC = ZPO Show that : PA = PB. 16. ABC is an equilateral triangle. Its side BCis produced upto point E such that C is mid. point of BE. Calculate the measure of angles ACE and AEC. 17. In triangle ABC, D is a point in AB such tha AC = CD = DB. If LB = 280, find the angle ACID. 18. In the given figure, AD = AB = AC, BD parallel to CA and angle ACB = 650. FITÆ angle DAC.

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