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Express cos a in terms of sin a

Express cos a in terms of sin a
asked 27.9k views
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Express cos a in terms of sin a

asked
User Jerelyn
by
8.0k points

1 Answer

1 vote

Answer:

Explanation:

We know that


sin^2a+cos^2a = 1,
so if we rearrange that and solve for
cosa then we get

cosa = ±
√(1-sin^2a)

answered
User Cog
by
7.9k points
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