Answer:
x= -11
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
The angles are <span>supplementary
</span>
7x + x + 20 = 180
8x = 160
x = 20
Answer:
Pythagorean's theorem: a²+ b²= c²
Sines: sin A = a/c, sin B = b/c.
Cosines: cos A = b/c, cos B = a/c.
Tangents: tan A = a/b, tan B = b/a.
Step-by-step explanation:
For example, if the side a = 22 and the angle A = 41°, we can use a sine and a tangent to find the hypotenuse and the other side. Since sin A = a/c, therefore c = a/sin A = 22/sin 41. Using a calculator, this is 22/0.6561 = 33.5314. Also, tan A = a/b, so b = a/tan A = 22/tan 41 = 22/0.8693 = 25.307.
Answer:

General Formulas and Concepts:
- Order of Operations: BPEMDAS
- Equality Properties
- Exponent Power Rule:

Step-by-step explanation:
<u>Step 1: Define equation</u>

<u>Step 2: Solve for </u><em><u>x</u></em>
- Multiply <em>a</em> on both sides:

- Square both sides:

- Simplify:

- Multiply <em>m</em> on both sides:

- Add <em>n</em> to both sides:

- Simplify:

- Square root both sides:
