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Example Questions
Example Question #11 : Fundamental Trigonometric Identities
Simplify.
None of these answers are correct.
Given these identities...
Example Question #1491 : Pre Calculus
Simplify completely.
First simplify the fraction
by multiplying it by its conjugate
.
After doing so, continue simplying:
Example Question #132 : Trigonometric Functions
Fully simplify.
Simplify:
None of these answers are correct.
Given the above identities:
Example Question #12 : Fundamental Trigonometric Identities
Simplify:
None of these answers are correct.
and
Therefore...
Example Question #131 : Trigonometric Functions
Find the exact value
.
By the double angle formula
Example Question #22 : Fundamental Trigonometric Identities
Find the exact value
.
By the double angle formula
Example Question #1501 : Pre Calculus
Find the exact value
.
By the double-angula formula for cosine
For this problem
Example Question #1502 : Pre Calculus
Find the exact value
.
By the double-angle formula for the sine function
we have
thus the double angle formula becomes,
Example Question #1501 : Pre Calculus
If , which of the following best represents
?
The expression is a double angle identity that can also be rewritten as:
Replace the value of theta for .
The correct answer is:
Example Question #1504 : Pre Calculus
Which expression is equivalent to ?
The relevant trigonometric identity is:
In this case, "u" is since
.
The only one that actually follows this is
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