
Sum and Difference formulas and double angle Trig HW
Authored by CHRISTOPHER CAVIN
Mathematics
12th Grade
CCSS covered
Used 9+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Find the exact value of the expression.
cos(20)cos(40) - sin(20)sin(40)
Tags
CCSS.HSF.TF.C.9
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Find the exact value.
cos (265 - 25) =
Tags
CCSS.HSF.TF.C.9
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the exact value.
cos (5π/18 - π/9)
Tags
CCSS.HSF.TF.C.9
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Given sin α = -3/5, cos α = -4/5 and cos β = (2√5)/5, sin β = (-√5)/5
Please find the sum or difference:
cos (α+β)=
Tags
CCSS.HSF.TF.C.9
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Simplify
sin(x+π)
Tags
CCSS.HSF.TF.C.9
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Use Sum or Difference Identities to find the exact value of each expression.
cos(75°)
Tags
CCSS.HSF.TF.C.9
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Find the exact value
2 - √3
2 + √3
-2 - √3
-2 + √3
Tags
CCSS.HSF.TF.C.9
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