The answer is 8.6. I hope this helped you out!
For cosФ×sinФ =0, then either cosФ or sin Ф must be zero.
cos 90 = cos 270 = 0
sin 0 = sin 180 = sin 360 = 0.
So, the values that would give you 0 are:
1. cos 90 sin Ф
2. cos 270sin Ф
3. cos Ф sin 0
4. cos Ф sin 180 and
5 cos Ф sin 360.
Answer:128
Step-by-step explanation:
Since he bought 3 pounds of cat food and 5 pounds of dog food, he bought 8 pounds of food in total. Since their are 16 oz in each pound, there are 8*16=128 ounces of pet food!
