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HSF.TF.C.9 Tutor Intake — Angle Addition and Double Angle Formulas

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Grade 9·14 problems·~18 min·Common Core Math - HS Functions·group·hsf-tf-c-9
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A

Concepts

1.

Complete the subtraction formula for sine by filling in the blank:

sin⁡(A−B)=sin⁡Acos⁡B\sin(A - B) = \sin A \cos B   ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲   cos⁡Asin⁡B\cos A \sin B

sign between the two cross-product terms: