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secondary 3 | A Maths
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Hi I need help with whole of qs 12 and 13
Date Posted: 3 years ago
Views: 323
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done
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im a little rusty at this but i hope this is accurate and helpful
for 12
for 12
Date Posted:
3 years ago
done
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Hi, I provide 1 to 1 tuition, $40/1.5h, can cover English / Maths / Science, ex-school teacher, can produce teaching cert from NIE, WhatsApp 9033 8810 or email hider@u.nus.edu :)
Date Posted:
3 years ago
done
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I'm a little rusty at this but I hope it's accurate and helpful
Date Posted:
3 years ago
Got to take the negative value for cos x/2 because a third-quadrant angle x (180 < x < 270) implies that angle x/2 is a second-quadrant angle (90 < x/2 < 135) so it’s cosine is negative
ah okay thanks!!
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