Sum and Difference Formulas - Sine and Cosine

Flashcard
•
Mathematics
•
9th Grade - University
•
Hard
+1
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the Sum and Difference Formulas for Sine?
Back
sin(a ± b) = sin(a)cos(b) ± cos(a)sin(b)
Tags
CCSS.HSF.TF.C.9
2.
FLASHCARD QUESTION
Front
What are the Sum and Difference Formulas for Cosine?
Back
cos(a ± b) = cos(a)cos(b) ∓ sin(a)sin(b)
Tags
CCSS.HSF.TF.C.9
3.
FLASHCARD QUESTION
Front
Find the exact value: sin(5π/12)cos(π/4) - cos(5π/12)sin(π/4)
Back
1/2
Tags
CCSS.HSF.TF.C.9
4.
FLASHCARD QUESTION
Front
Write the expression cos(175)cos(55) + sin(175)sin(55) as a sine or cosine of an angle.
Back
cos(120)
Tags
CCSS.HSF.TF.C.9
5.
FLASHCARD QUESTION
Front
Find the exact value: cos(265 - 25)
Back
-1/2
Tags
CCSS.HSF.TF.C.9
6.
FLASHCARD QUESTION
Front
Find the exact value: cos(20)cos(40) - sin(20)sin(40)
Back
1/2
Tags
CCSS.HSF.TF.C.9
7.
FLASHCARD QUESTION
Front
Find the exact value: cos(5π/18 - π/9)
Back
√(3)/2
Tags
CCSS.HSF.TF.C.9
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