Answer:
Step-by-step explanation:
Given:
The above triangle
Required
Solve for AB in terms of a, b and angle C
Considering right angled triangle BOC where O is the point between b-x and x
From BOC, we have that:
Make h the subject:
Also, in BOC (Using Pythagoras)
Make the subject
Substitute for h
becomes
Factorize
In trigonometry:
So, we have that:
Take square roots of both sides
In triangle BOA, applying Pythagoras theorem, we have that:
Open bracket
Substitute and in
Open Bracket
Reorder
Factorize:
In trigonometry:
So, we have that:
Take square roots of both sides
Answer:
111,6cm²
Step-by-step explanation:
S.A = 4 * 3,1 * r²
S.A = 4 * 3,1 * 3²
S.A = 4 * 3,1 * 9
S.A = 36 * 3,1
S.A = 111,6
Answer:
$97.20
Step-by-step explanation:
97.20 x 0.15 = 14.58
Multiply the total by 15 percent, giving you the $14.58 tip, proving it to be correct.
Answer:
.192 kl
Step-by-step explanation:
1000 liters is equal to 1 kiloliter
The conversion factor is 1 kl / 1000l
We have 192 liters
192 * 1 kl / 1000l = 192/1000 kl = .192 kl