Use a trigonometric ratio to find the value of x. Round your answer to the nearest tenth. 8.9 cm
Isso

SOH CAH TOA

-first what do we have?

 - opposite = 8.9

-adj = x

Tan(55)/1 = 8.9/x

cross multiply to get your answer

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.