Answer:
use the pythagoras theorem
a^2 + b^2 = c^2
3^2 + b^2 = 15^2
b^2 = 225 - 9
= 216
b = _/216
b = 14.6969384567
How to evaluate an express.
Answer:

Step-by-step explanation:
Replace of by ×, that is
× 6
Cancel the 8 and 6 by 2, leaving

Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality
<u>Pre-Calculus</u>
Law of Sines: 
- A, B, C are angle measures
- a, b, c are leg lengths
Step-by-step explanation:
<u>Step 1: Identify</u>
A = 27°, a = 11
B = x°, b = 15
<u>Step 2: Solve for </u><em><u>x</u></em>
- Substitute [LOS]:

- Cross-multiply:

- Isolate <em>x</em> term:

- Isolate <em>x</em>:

- Evaluate:

- Round:
