Use a Graphing Calculator to Make a Conjecture as to Whether

question 223

Multiple Choice

Use a graphing calculator to make a conjecture as to whether each equation is an identity.
-Find $\sin \theta$ if $\cos \theta = \frac { 2 } { 3 }$ and $\theta$ is in quadrant IV.

• A) \(- \frac { \sqrt { 5 } } { 3 }\)
• B) \(\frac { 5 } { 4 }\)
• C) \(- \frac { 3 } { 2 }\)
• D) \(\frac { 3 \sqrt { 7 } } { 7 }\)

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Definitions:

Novel Idea

A new, original, or unusual concept or thought that has not been considered before.

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