Solving trig equations using CAST part 1

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In this video I have solved two simple trig equation using CAST and also checking the answer on the graphic calculator
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Thank you so much for this tutorial, cleared so much up for me!

billyco
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Thanks so much for the video, really helped allot :)

samsta
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In the second example, why did you draw the the angle in the cos quardrant not the tan ?

lumphasin