Use a calculator to solve the equation on the interval [0 , 2π].
2 tan²(x) - 7 tan(x) + 5 =0

or , or

Step-by-step explanation:

Let use the following substitution formula:

The trigonometric expression is converted into an algebraic one, a second-order polynomial:

Roots can be found by using the General Equation for Second-Order Polynomial:

Roots are and . As tangent function has a periodicity of , solutions of and belong to first and third quadrants. Then, angles can be easily found by using inverse trigonometric functions:

or

or

if i put something wrong your not gonna like it so rather not say nothing.

hello, sorry being so rude after all that fighting i found it kind of funny, so as me saying sorry here is an answer!

since the table showed her that   2km = 2000m.

to determine, how many km in 2000m, she would divide by 1000.

= 2000 / 1000 = 2 km.

similarly, for 8000m = 8000 / 1000 = 8 km

cheers to savings

~

your pal papaguy