Use the Cofunction Identities to Find an Angle That Makes $\tan \frac { x } { 2 }$

question 286

Multiple Choice

Use the cofunction identities to find an angle that makes the statement true.
-Find $\tan \frac { x } { 2 }$ , given that $\tan x = 3$ and $x$ terminates in $\pi < x < \frac { 3 \pi } { 2 }$ .

• A) \(\frac { \sqrt { 10 } + 1 } { - 3 }\)
• B) \(\frac { \sqrt { 10 } - 1 } { - 3 }\)
• C) \(\frac { \sqrt { 10 } - 1 } { 3 }\)
• D) \(\frac { \sqrt { 10 } + 1 } { 3 }\)

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Definitions:

Variable N

A symbol or placeholder for an unknown or changing quantity in mathematics and science.

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A certificate that states there is a specific sum of money on deposit and guarantees the payment of a fixed interest rate after a certain period of time, usually seven days to ten years; deposits and withdrawals cannot be made with a CD.

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An account that pays a higher interest rate than other types of accounts, but usually requires a higher initial deposit and a higher minimum balance often with a limit on the number of transactions per month.

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