The correct answer is 4m/s.
Answer:
A=15
Step-by-step explanation:
7 5 35
-- x -- = ---
8 1 8
Therefore 35/8 = 4 3/8
Your answer is 4 3/8, Hope this helped! :)
We know that
if <span>180º≤A≤270º
</span>then
A belongs to the III quadrant and tan A is positive
we have
5tan²A = 2tanA + 6-------> 5tan²A - 2tanA - 6=0
let
x=tan A
5x²-2x-6=0
using a graph tool----> to resolve the second order equation
see the attached figure
x=-0.91
x=1.314
remember that tan A is positive
the solution is
x=1.314
tan A=1.314
A=arc tan (1.314)--------> A=52.73°-----> A=52.7°
180º≤A≤270º
then
A=180+52.7-----> A=232.7°
the answer isA=232.7°