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secondary 4 | A Maths
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Please help me
Date Posted: 7 years ago
Views: 489
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Hi Rose, after looking, try working it out. It helps!
Cheers, Ivan
Cheers, Ivan
Date Posted:
7 years ago
Thank you so muchh! But how can it become 2 sinΦ cosΦ?
Hi Rose, in the Topic Trigonometric Identities, sin2Φ = 2sinΦcosΦ is a double-angle formula. Take a look in your textbook or online for more information about double angle formulas. Some other DAF are: cos(2x) and tan(2x)
Ahh i see, thank you so much for helping me!
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