Write the Given Expression as the Cosine of an Angle $\cos 30 ^ { \circ } \cos 50 ^ { \circ } + \sin 30 ^ { \circ } \sin 50 ^ { \circ }$

question 93

Multiple Choice

Write the given expression as the cosine of an angle. $\cos 30 ^ { \circ } \cos 50 ^ { \circ } + \sin 30 ^ { \circ } \sin 50 ^ { \circ }$

• A) \(\cos \left( 50 ^ { \circ } \right)\)
• B) \(\cos \left( - 20 ^ { \circ } \right)\)
• C) \(\cos \left( 80 ^ { \circ } \right)\)
• D) \(\cos \left( 30 ^ { \circ } \right)\)
• E) \(\cos \left( - 100 ^ { \circ } \right)\)

---

Definitions:

Normally Distributed

A description of dataset that follows a normal distribution, with most observations clustering around the mean and symmetrical tails.

Mean Value

The average of a set of numbers, calculated by dividing the sum of all values by the number of values.

Promotional Campaigns

Marketing strategies designed to increase awareness, interest, and sales of a product or service through various communication means.

Gross Sales

The total unadjusted income a company generates from sales before any deductions are made.