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Question
secondary 4 | A Maths
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Helpz how to get cos(pi/2 - A) = 5/13 ?
Date Posted: 6 years ago
Views: 273
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It should be -ve 5/13
:)
done
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clear
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Cos (90°-A) =SinA
Date Posted:
6 years ago
tanA and cosA have opp signs
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