Mason's answer to chae's Secondary 3 E Maths Singapore question.
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You need to memorise the blue box. If you cannot memorise like me, punch in a few values in your calculator to see the relationship between sin(x) and sin(180-x) and the other trigo functions. Hope this helps!!
Date Posted:
1 year ago
thank u super helpful!! was confuse on how to apply the ones in blue box bc of the numbers before the trigonometry but i can solve it now!
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