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HTKPenguin
23.06.2019 •
Mathematics
Which equation can be used to solve for b? 5 cm 10 cm tan(309) = 5 tan(309) = tan(309) = 10 tan(30)=10
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Ответ:
10cm
step-by-step explanation:
ik
Ответ:
Step-by-step explanation:
We have the following quadratic equation:
Which is in the form:![ax^{2} + bx + c=0](/tpl/images/0371/7754/e6615.png)
And can be solved with the quadratic formula:![x=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}](/tpl/images/0371/7754/ae432.png)
Where
,
, ![c=1](/tpl/images/0371/7754/b9bd2.png)
Knowing this, let's begin:
Factoring
we have
. hence:
Solving for both options: