Consider the equation \displaystyle \tan^2\theta -\sin^2\theta = \sin^2\theta\tan^2\thetatan ​2
​​ θ−sin
​2
​​ θ=sin
​2
​​ θtan
​2
​​ θ.

a) Which of the basic identities will you use first to simplify the left side?

b) Which is the one step before simplifying to the right side?

the answer to this question is yes

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.