sin x = cos 54 = sin (90-54) = sin 46
Hence x = 46 deg
Same technique. Sin 21 = cos (5x+9) = sin (90-5x-9)
81-5x = 21
Or 5x = 60
Or x = 12 deg
hope it helps
Answer:
x > 6 and x ≤ 10
Step-by-step explanation:
You have to sleep for more than 6 hours, which means it is greater than and can not be equal to because it has to be more than 6 hours.
For the second problem, at most includes the 10th person so x is less than or equal to 10.
Hope this makes sense!!
X = arcsin (1/2) = 30 degrees
Answer:
C) 5 hours
Step-by-step explanation:
Find the mean of the sample
Add the numbers together and divide by the number of points
mean = ( 4.5 + 6.25 + 3+ 2.5+ 7 + 6.75)/6
=30/6
=5
Answer:
108
Step-by-step explanation:
