Angles and Trigonometric Functions Answers
5 verified answers
1
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Which trigonometric expressions equal ? Check all that apply.
A
cos(120°)B
Sine (StartFraction 7 pi Over 6 EndFraction)
C
sin(–120°)D
Cosine (StartFraction 7 pi Over 6 EndFraction)
E
Cosine (negative StartFraction 10 pi Over 3 EndFraction)
2
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definition of cosine✔ definition of sinePythagorean theorem
A
definition of cosineB
definition of sineC
Pythagorean theorem3
definition of cosinedefinition of sine✔ Pythagorean theorem
A
definition of cosineB
definition of sineC
Pythagorean theorem4
multiplicationsimplification✔ substitution
A
multiplicationB
simplificationC
substitution5
associative propertydistributive property✔ laws of exponents
A
associative propertyB
distributive propertyC
laws of exponentsDid you find these answers helpful?
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