Answer:
Three angles all equal is one equal triangle I pretty sure of this
Step-by-step explanation:
Answer:
cos57° = x/51
General Formulas and Concepts:
<u>Trigonometry</u>
- [Right Triangles Only] sin∅ = opposite over hypotenuse
- [Right Triangles Only] cos∅ = adjacent over hypotenuse
Step-by-step explanation:
<u>Step 1: Define</u>
We are given a right triangle. We can use trig to solve for the missing side length.
<u>Step 2: Set up ratios</u>
We can choose between the 2 angles and have multiple ratios to solve for <em>x</em>.
sin33° = x/51
cos57° = x/51
Hence, we see that the 1st option would be the correct answer.
Answer:
The age of the person who walked in the room is 44.
Step-by-step explanation:
The original mean age is 38 which means the total ages combined divided by the 5 people.
5 people x 38 (the mean age) = x
x = Total ages combined
x = 190 years old
Then another person came in, now totaling 6 people, and the mean age changed to 39 years old, an increase.
6 people x 39 (the new mean age) = y
y = Total ages combined
y = 234 years old
So, we are trying to figure out the age of the new person who came in. We have to subtract the new total age (y) by the original total age (x).
y - x = Age of new person in room
234 years old - 190 years old =
44 years old