Question is a little confusing but I will say -290?
When you trisect an angle, you cut it into three equal pieces.
Answer:
Step-by-step explanation:
Let ![f(x)=y](https://tex.z-dn.net/?f=f%28x%29%3Dy)
y=2x-10
Switch x and y,
x=2y-10
x+10=2y
(x/2)+5=y
So ![f^{-1}(x)=\frac{x}{2}+5](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Cfrac%7Bx%7D%7B2%7D%2B5)
We can use the Cosine Law ( π / 3 = 60° ):
c² = a² + b² - 2 a b cos C
c² = 4² + 3² - 2 · 4 ·3 · cos 60° = 16 + 9 - 24 · 1/2 = 25 - 12 = 13
Answer:
The length of the third side of a triangle is c = √ 13 ≈ 3.6
Answer:
and ![\sqrt{13}](https://tex.z-dn.net/?f=%5Csqrt%7B13%7D)
Step-by-step explanation:
Given a polynomial with rational coefficients, its irrational and complex roots would occur in conjugate pairs.
For example, if the roots of a polynomial are 2 +
, 3 and 4 - 3i, then 2 -
, and 4 + 3i are also roots of the polynomial.
Therefore, since the given polynomial has rational coefficients and some of its roots are ,
and -
, then -
and
are also roots of the polynomial.