Question

Someone help please!?!

Answer 1

Answer: a≈6,1.

Step-by-step explanation:

                                 The sine theorem states:

                                $\boxed {\frac{a}{sinA^0} =\frac{b}{sinB^0}= \frac{c}{sinC^0} }$,             ⇒

$a=\frac{c*sinA^0}{sinC^0}$

m∡A=180°-(m∡B°+m∡C°)

=180°-(68°+76°)

=180°-144°

=36°.           ⇒

$a=\frac{c*sin36^0}{sin76^0}\\ =\frac{10*sin36^0}{sin76^0} \\\approx6,1.$

Good luck an' have a nice day!