if 3 sin theta is equal to 4 cos then cos=?
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Answer:
21
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Another problem that I already wasted hours on. Given
4sinθ+3cosθ=5
Find
4cosθ−3sinθ
Help me guys (PS:I'm not that good in maths)
algebra-precalculus trigonometry
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edited Apr 20 '18 at 14:03
Martin Sleziak
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asked Apr 17 '14 at 8:33
Anz Joy
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closed as off-topic by Did, Xander Henderson, amWhy, user21820, wgrenard Apr 20 '18 at 21:26
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Why does this have so many views? This is a standard trig question. – user85798 Apr 18 '14 at 4:04
2
@Oliver Maths is always amazing no matter how tough or easy the question are 'cz there exist unimaginably countless ways you could reach the same answer. – Anz Joy Apr 18 '14 at 5:36
@user1488 probably because standard trig questions are useful and interesting to many people doing maths. – user334732 Apr 20 '18 at 17:4active oldest votes
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