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Example Questions
Example Question #4 : Sum And Difference Identities
Use the sum or difference identity to find the exact value:
Possible Answers:
Example Question #1 : Sum And Difference Identities
Is the following equation an identity?
Possible Answers:
It cannot be determined from the given information.
Yes it is an identity.
No it is not an identity.
Correct answer:
No it is not an identity.
Explanation:
and due to this inequality, this is not an identity
Example Question #2 : Sum And Difference Identities
Use the sum or difference identity to find the exact value:
Possible Answers:
Correct answer:
Explanation:
Using the identity, we can break up the into
and then solve:
and so the correct answer is
.
Example Question #2 : Sum And Difference Identities
Possible Answers:
The answer cannot be determined from the information provided.
No it is not an identity
Yes it is an identity
Example Question #2 : Trigonometric Identities
Use the sum or difference identity to find the exact value of .
Correct answer:
Explanation:
Here we break up the into
and solve using the sin identity:
and so here the credited answer is
.
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