PLS HELP ASAPPP plsss

27.5

Step-by-step explanation:

this is the trigonometric ratio.. we are looking for d... that is the opposite... any side facing the angel is the opposite so the longest side of the right angle triangle is the hypotenuse so you are looking for the opposite and you are giving the hypotenuse so the easiest way to know how to find it is by using this way SOH CAH TOA the first words stand for sin cosine and tangent of angles we are using sin because it says opposite / hypotenuse... and as you can see the angle which is 39 degree we will use sin 39what will be sin 39=d/30mthen ull cross multiply d=30m* sin 39

d = 30m *0.963

d = 28.8

but since 27.5 is dere

you can round up to 1 sig. f =28

77

step-by-step explanation:

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true