Kimberley's answer to Priscilla's Secondary 4 A Maths question.
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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!
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!
Date Posted:
6 years ago
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