A-Level Maths: E7-12 Trig Equations: Solve 1/cos(x) = 5 between 2π and 4π radians

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I’ve done all the videos in this series so far so now I’m going to take a break, have a coffee and a pie 🎉

davidhill
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Hi. Do you need to draw the graph as working out or can you just write the answers down by using solveN?

lokep