Answer:
60.16 m
Step-by-step explanation:
Let w = width of river
Using trigonometry :
The width, w of the river is can be calculated thus :
Tan θ = opposite / Adjacent
Tan 76 = w / 15
4.0107809 = w / 15
w = 15 * 4.0107809
w = 60.1617 m
Hence, width of the river is 60.16 m
Answer:
2 3/5
Step-by-step explanation:
convert mixed number into improper fraction
(whole number × denominator + numerator over denominator)
4 × 3 + 1
12 + 1
13/3
13/3 × 3/5
multiply numerators
39
multiply denominators
15
39/15
3 can be divided into both number 39 and number 15 so:
13/5
this is simplest form as an improper fraction
if the teacher wants simplest form as a whole number, the answer is:
2 3/5
Answer:
32.49
Step-by-step explanation:
22.8÷4=5.7
5.7 x 5.7 = 32.49
When two triangles are similar, they're sides are in proportion.
In order to find the unknown side, we first have to find the ratio of the larger triangle to the smaller triangle.
We can use the sides TV and LN to make the proportion.
=
The ratio between the two triangles is 21:6
Now we can solve for the unknown side.
=
Cross multiply:
8 * 21 = 6 * LM
168 = 6LM
Divide both sides by 6:
LM = 28
The unknown side's length is 28 centimeters
Good luck!