Complete the Sentence So the Result Is an Identity $\sin ( s + t )$

question 314

Multiple Choice

Complete the sentence so the result is an identity. Let x be any real number.
-Find $\sin ( s + t )$ given that $\cos s = - \frac { 12 } { 13 }$ , with $s$ in quadrant II, and $\sin t = \frac { 8 } { 17 }$ , with $t$ in quadrant II.

• A) \(\frac { 171 } { 221 }\)
• B) \(- \frac { 171 } { 221 }\)
• C)----
• D) \(- \frac { 21 } { 221 }\)

---

Definitions:

Raw Materials

These are the basic substances or components used in the production of goods or services.

Atom Economy

refers to a measure in green chemistry that evaluates the efficiency of a synthetic chemical process in terms of the amount of starting materials that end up in the final product.

Stoichiometric Reagents

Chemical substances used in reactions in exact proportions as determined by the reaction equations.

Hazardous Substances

Chemicals or compounds that might pose a risk or cause harm to health, safety, or the environment when improperly handled or released.