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03-02-2020
Mathematics

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Use the relationship between the sine and cosine functions to fill in each blank .

5. cos 78° = sin___

Use the relationship between the sine and cosine functions to fill in each blank 5 cos 78 sin class=

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SilverChain SilverChain

03-02-2020

Answer:

sin(12°)

Step-by-step explanation:

Because sine and cosine are cofunctions, we can use the relation sin(90° - θ) = cosθ to show that cos(78°) = sin(90° - 78°) = sin(12°)

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