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use double angle formulasEmergent, please help!
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I have no doubt in solving this problem as I have nearly finished the further. Yet I need to make sure I score all the method mark given. for ii), please take a look at the mark scheme as below.
View attachment 47797
Can anybody tell how to use the correct trig formulae to obtain a 3-term quadratic in tan sita, sin 2sita,cos 2sita, or tan2sita?
Very very time-limited, please reply quickly, thanks!!!!
btw its written "hence" so it means u shld use the answer from part (i) in part (ii) to some extent.