Question

Due Tomorrow: answer question 4 with steps

Answer 1

Explanation:

Question 4

we have two sides and an angle so we should use law of cosines to solve for c

`7=√(5^2+c^2-2*5*c*cos(35))\\\\49=25+c^2-10*c*cos(35)\\25=c^2-8.19152044289c\\c^2-8.19152044289-25=0\\`

(using the quadratic formula)

c=10.48131

To solve for b use the law of cosines again

`5=\sqrt{7^2+10.48131^2-2*7*10.48131*cos(B)\\`

B=24.1858343432