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Question
secondary 3 | A Maths
2 Answers Below
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Date Posted: 3 years ago
Views: 449
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Clarify with me if you've got any doubts!
Date Posted:
3 years ago
Hi, thank you for the solution. May I ask why double angle formulae which I learned in textbook for sin 2A = 2sin A cos A, where yours is different?
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Hey! Yup your double angle formula is right, I've just skipped a no. of steps but if you were to slowly expand and make use of the double angle formula, you will still derive at the answer!! Hope my clarification helps!
Date Posted:
3 years ago
Ok got it! Thank you very much!
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