Answer:
a) 5:3
b) 7.5:5.3
Step-by-step explanation:
150min : 90min (1 and a half hour)
10 : 6
5 : 3
150 × 10 mm : 1060 mm
1500 : 1060
750 : 530
7.5 : 5.3
Answer:
yes that is right
Step-by-step explanation:
Answer:
45
Step-by-step explanation:
46
Answer:
See explanation
Step-by-step explanation:
The range of the cosine function is 
Therefore
is not defined.
Assuming your question is rather 
Then
in the second quadrant.

