3 years ago

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

Mathematics

1 answer:

rjkz [21]3 years ago

8 0

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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