Answer:
a) ±0.73
b) ±3%
Step-by-step explanation:
One side of the right angle triangle is 12cm
The opposite angle(x) is 30 degree
Possible error = ±1degree
a) Let the hypotenus= h
h/12 = cosecx
h = 12cosecx
Differentiate h with respect to x
dh= -12cosecxcotcdx
The possible error in the angle measurement is dx
dx= ±1degree
Convert degree to radians
dx = ±1*π/180
dx = ± π/180
Put x and dx into dh
dh = -12cosec30cot30(±π/180)
= -12(2)(√3)(±π/180)
= -24√3(±π/180)
= ±24π√3/180
= ±0.73
b) To find the percentage error, recall that
dh = 12cosecx
dh = 12cosec30
dh = 12(2)
= 24
Percentage error =
(change in value/initial value) 100
Percentage error = (dh/h)100
= (±0.73/24)100
= ±0.030*100
= ±3%
Answer:
12:15
Step-by-step explanation:
1.) add one hour to 10:45 to get 11:45
2.) then add half 30 minuets to 11:45 to get twelve or you could add half of 30 minuets (15 mins) to get 12:00 and then add the remaining 15 minuets to get 12:15
Answer:
A line supplementary to AOD is AOC.
A line adjacent and congruent to AOE is COE (I think)
A line supplementary to EOA is EOC
A line complimentary to EOD is DOC
DOC and AOB are vertical angles.
Step-by-step explanation:
I think all of those are correct.