Given:
In 
and 
.
To find:
The 
.
Solution:
In 
,
It means the triangle QRS is an isosceles triangle. We know that the base angles of an isosceles triangle are congruent and their measures are equal.
[Base angles of isosceles triangle QRS]
...(i)
In ,
[Using (i)]
Divide both sides by 2.
Therefore, the is 33 degrees.
Recall your d = rt, distance = rate * time.
let's say the boat has a still water rate of "b", and the current has a a rate of "c", ok.... when the boat is going upstream, is not really going "b" fast, is going slower at "b - c", due to the current going in the opposite direction.
when the boat is coming downstream, is not going "b" fast either, is going faster, is going "b + c", due to the current adding speed to it.
we know the trip up was 108 kms, thus the return trip is also 108 kms.
and surely you know how much that is.
what's the boat's speed? well, 36 + c = b.
Answer: 20.5
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
