Mr Ang's answer to Vignesh anand's Secondary 3 A Maths Singapore question.
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Kindly verify the workings eh, thanks.
(Sorry but I am not Mr Eric) :)
(Sorry but I am not Mr Eric) :)
Date Posted:
3 years ago
Thank u so much Mr. Ang.
Why we do pi-pi/6=5pi/6
Because Cosine ratio is negative, hence it is in the second quadrant. Therefore the answer is pi-pi/6=5pi/6.
Hope this clarifies. :)
Hope this clarifies. :)
Oh . I got it. Thanks a lot
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