Answer:
Step-by-step explanation:
1. sinФ = cos 25
25 ° is in the between 0 and 90°
therefore it can simply represent
cosФ= sin (90-Ф) = sin (90 - 25) = sin 65
2. sin(Ф/3 + 10) = cos Ф
cos Ф = sin (90 -Ф)
sin(Ф/3 + 10) = cos Ф
sin(Ф/3 + 10) = cos Ф = sin(90-Ф)
Ф/3+10=90-Ф
10Ф+3/30 = 90-Ф
10Ф+3 = 30(90-Ф)
10Ф+3 = 2700-30Ф
10Ф+30Ф=2700-3
40Ф = 2697
Ф = 2697 / 40 = 67.425 ≅ 67.4°
Answer:
The number of hours spend by Diana at the pool that week is 1.6
Step-by-step explanation:
Given as :
The Time spends by Diana at the pool = 0.8 hours per day
The number of days spend by Diana in one week = 2 days
So, The number of hours spend by Diana in one week = number of days × number of hours spend per day .
or, The number of hours spend by Diana in one week = 2 days × 0.8 hours
= 1.6 hours
Hence The number of hours spend by Diana at the pool that week is 1.6 hours Answer
It's 20 I think ur welcome
The formula to find the volume of a cylinder is 3.14 • r squared • h
Here is a proportion
5/2 = x/8
2x = 40
/2 /2
x = 20
Hope this helps
