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Question
secondary 4 | A Maths
3 Answers Below
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Pls solve. Thank you
Date Posted: 9 months ago
Views: 93
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Use addition/compound angle formula and then solve as per normal by finding basic angle etc
Date Posted:
9 months ago
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Note that the period of the graph is 360/4=90.
Hope this helps.
Hope this helps.
Date Posted:
9 months ago
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From A+B+C=180, A= 180-(B+C). Find sin2A and sin A in terms of B and C. Then work from LHS to RHS. Hope this helps.
Date Posted:
9 months ago
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