Hi there!
<em><u>Another student asked this same question. Here is the link to the answer. I will still leave you the full answer down here just in case :</u></em>
brainly.com/question/11503791#readmore
I am not sure which "x" you are talking about, the one for the third angle or the one in the parentheses representing another angle.
If you are wondering what the value of "x" being the third angle is, the answer is 60° since this is an equilateral triangle and all the angles are equal to 60°.
But I am pretty sure that you are looking for the value of the "x" in the parentheses. To find its value, you need to create an equation and solve it by isolating "x". Since we know that all the angles are equal to 60°, your equation should look like this :
2x - 4 = 60
Add 4 on each side of the equation
2x = 64
Divide each side of the equation by 2
x = 32
There you go! I really hope this helped, if there's anything just let me know! :)
Polynomial is an expression of more than two algebraic terms.
<h3>
Definition of quadrilateral:</h3>
- A quadrilateral is a four-sided polygon with four edges (sides) and four corners in geometry (vertices).
- The name comes from the Latin words quadri, which means "four," and latus, which means "side."
- In comparison to other polygons, it is also known as a tetragon, derived from the Greek "tetra" meaning "four" and "gon" meaning "corner" or "angle"
- In the same way as other polygons (e.g. pentagon). While "gon" means "angle," it's also known as a quadrangle or 4-angle.
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Answer:

Step-by-step explanation:
Let's use the sine law to calculate x.

Answer:
-150
Step-by-step explanation:
Multiply & Divide left to right

Once again Multiply & Divide

Add & Subtract
Final Answer: 