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Ooohhhh I see now! Thanks!

This was one of the first things I tried, I'm pretty sure it's incorrect though. I checked on desmos which shows the solution to be -0.4672. Did forget about radians though :oops:.

sin^-^1xcos^-^1x=-1 How do you solve this equation? I'm absolutely clueless and nothing I've tried has worked so far. The textbook answer is -0.47 (2d.p.) however when you sub it into x it returns −3309.00847. Thanks in advanced.