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secondary 4 | A Maths
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Priscilla
Priscilla

secondary 4 chevron_right A Maths

Need help with question 1a). Thanks.

Date Posted: 6 years ago
Views: 340

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Bryan Lim Choon Kiat
Bryan Lim Choon Kiat's answer
12 answers (Tutor Details)
1st
Forgot a few ° symbols, but point is there.

Hope it helps.
Priscilla
Priscilla
6 years ago
Okay, thanks.
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Kimberley
Kimberley's answer
39 answers (Tutor Details)
Hi:) just wanted to add that this would be a faster/ possibly easier method to find out if the values are positive/negative.

Since 290deg is in the 4th quadrant represented by C (cosine), and we know that all cosine values in that quadrant are positive, sec 290 will also be positive.

Just offering an alternative method:) hope this helps!