Given:

To find:
The exact value of cos 15°.
Solution:

Using half-angle identity:


Using the trigonometric identity: 

Let us first solve the fraction in the numerator.

Using fraction rule: 

Apply radical rule: ![\sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7B%5Cfrac%7Ba%7D%7Bb%7D%7D%3D%5Cfrac%7B%5Csqrt%5Bn%5D%7Ba%7D%7D%7B%5Csqrt%5Bn%5D%7Bb%7D%7D)

Using
:


Answer: 2.5% of the bags weigh less than 282 grams.
Step-by-step explanation: Just took the test and this was the correct answer! :)
Answer:
Coordinate
Step-by-step explanation:
It is a coordinate because with slope you would need at least two ordered pairs
Answer:
Mass and force acting on it determine how it ...
Step-by-step explanation:
:D