Hello ! I cant remember how to solve this... please help me Find all the solutions in the intervall [-4pi; 4pi] for a) sin(x) = 0.23 b) cos(x) = -0.9 c) tan(x) < 1
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Originally Posted by coobe Hello ! I cant remember how to solve this... please help me Find all the solutions in the intervall [-4pi; 4pi] for a) sin(x) = 0.23 b) cos(x) = -0.9 c) tan(x) < 1 (a) solutions are in quads I and II going from to ... , , , .. now you go from to (b) solutions are in quads II and III from to ... , , , get the idea? for (c) , look at the graph.
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