Answer: 46 degrees
Explanation: Subtract 32 degrees from 78 degrees and you will get your answer.
Answer:

Step-by-step explanation:

Apparently, you're supposed to recognize that the formula tells you the value of cos(x/2).
The equation for the area of a triangle is A= b*h /2. So, plug in your known variables, and you get 270in^2= b*30 /2. First you multiply by 2 to cancel out the division for 2, which gets you 540= b* 30. To get "b" by itself, divide both sides by 30, giving you <u>18=b</u>.
To check this, plug in your new known variable, as 270= 18* 30 /2. This will equal as 270=270, confirming 18in as the correct measurement.
I THINK IT IS 4 AND 5 NOT SURE BUT I DID THE MATH
To make the exponent positive, make a fraction. 1/3 * 1/3. This is 0.1 repeating. 3^1 is 3. So the answer is no.