Can someone help me out with this

Question

asked May 25, 2021 221k views

1 Answer

Jesse Gallagher · Answer 1 · 2021-05-29T16:26:52+0000

Answer:

AB=4.41

Explanation:

Use the cosine ratio,
cosine=(adjacent)/(hypotenuse) . Insert the values:

cos25=(4)/(x)

Isolate x. Multiply both sides by x:

$x*(cos25)=x*((4)/(x))\\\\x*cos25=4$

Divide both sides by cos 25:

$(x*cos25)/(cos25)=(4)/(cos25)\\\\x=(4)/(cos25)$

Insert into a calculator:

x=4.414

Round to the nearest hundredth:

x=4.41

Done.