if it takes 2 people 8 hours to decorate a room. How many people do I need to decorate 15 rooms in 24 hours?
1 answer:
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Answer:
Step-by-step explanation:
sin x=a+b
cos x=a-b
sin²x+cos²x=(a+b)²+(a-b)²=2a²+2b²
or 2a²+2b²=1
a²+b²=1/2 which is constant for all values of x
(ii)
The answer would be B) 3
