7.2-7.3 Review
Flashcard
•
Mathematics
•
11th - 12th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
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16 questions
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1.
FLASHCARD QUESTION
Front
If cosx = -4/5, find secx.
Back
secx = -5/4
Tags
CCSS.HSF.TF.A.2
2.
FLASHCARD QUESTION
Front
Use a double-angle or half-angle identity to find tan(θ/2) given sin θ = -3/5 and 3π/2 < θ < 2π.
Back
tan(θ/2) = -1/3
Tags
CCSS.HSF.TF.C.9
3.
FLASHCARD QUESTION
Front
Use the Half-angle formulas to find sin 22.5º.
Back
sin 22.5º = √(2 - √2)/2
Tags
CCSS.HSF.TF.C.9
4.
FLASHCARD QUESTION
Front
Use a double-angle or half-angle identity to find sin 2θ given cos θ = 4/5 and 270° < θ < 360°.
Back
sin 2θ = -24/25
Tags
CCSS.HSF.TF.C.9
5.
FLASHCARD QUESTION
Front
Definition of secant (sec):
Back
Secant is the reciprocal of cosine: sec(x) = 1/cos(x).
Tags
CCSS.HSF.TF.A.2
6.
FLASHCARD QUESTION
Front
Definition of tangent (tan):
Back
Tangent is the ratio of sine to cosine: tan(x) = sin(x)/cos(x).
Tags
CCSS.HSF.TF.A.2
7.
FLASHCARD QUESTION
Front
Definition of sine (sin):
Back
Sine is a trigonometric function defined as the ratio of the opposite side to the hypotenuse in a right triangle.
Tags
CCSS.HSG.SRT.C.6
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