Terry said, "i will define the zine of an angle xx as follows. build an isosceles triangle in which the sides of equal length meet at angle xx. the zine of xx will be the ratio of the length of the base of that triangle to the length of one of the equal sides." molly said, "won’t the zine of xx depend on how you build the isosceles triangle? "
a. what can terry say to convince molly that she need not worry about this? explain your answer.
b. describe a relationship between zine and sin.

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it