Answer:
None of these
Step-by-step explanation:
The two cases are for trigonometry special angles.
The cosine of an angle is given as the adjacent side length divided by the hypotenuse side length
Cos ∅ = A/H
1. The case of 45°,45°,90°
Cos x = 1 /√2
2. The case of 30°, 60° ,90°
Cos x = 1/2 or √3/2
we have that
the total cost is

In this equation the term 30h represent the cost due to h hours at at unit of 30
and the term 0.040(30h) is equal to calculate the 4% of (30h)
so
in this problem the tax rate is equal to 4%
therefore
<u>the answer is</u>
The term 0.040(30h) represents the amount of tax she must pay
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
step 1
In the right triangle ABC find the length side BC
we know that


step 2
In the right triangle ABD find the length side BD
we know that


step 3
we know that
The distance between the two boats is the length side CD

substitute the values

Answer: (-1, 10)
Step-by-step explanation:
5. Completa estos patrones:
a. 0.03 0.3 __________ 30 __________ __________