Examples and Practice Test (with Solutions)

3 sinx sin(45) + sin(30) sin(75) Random Trig Extras 1.207 .966 x + 3sinx -1.722 0 or x tanx = cotx (solve and graph, using degrees or radians) etc.. method 2: use reciprocal method 1: use quotient identities smx cosx sm x 2 cos x cosx smx cos x sin2 x 0 tan 2 x tanx = 1 Are these the same?!?!? tanx double angle identity 2x Notes: sm sm cos2x ................
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