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In the figure below, K,L,M and M are points on the circumference of a circle centre O. The points K,O,M and P are on a straight line. PN is a tangent to the circle at N. Angle KOL=#130^0# and angle MKN=#40^0#.
Find the values of the following angles, stating the reasons in each case:
(a) #angle# MLN
(b) #angle# OLN
(c) #angle# LNP
(d) #angle# MPN