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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- Apr 22nd 2010, 06:47 AMcoobeTrigonometric equations
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 - Apr 22nd 2010, 05:10 PMskeeter