In radians, pi = 180 degree, Hence for 2pi = 360
degree.
For cos 0 = cos 2pi = 1
And
Sin 0 = sin 2pi = 0
While cospi = -1 and sinpi = 0
So
<span>A) </span>cos2pi
+ sin2pi = 1 + 0 = 1
<span>B) </span>cos2pi
– 1 = 1 – 1 = 0
<span>C) </span>1
– 2sin2pi = 1 – 2(0) = 1
<span>D) </span>2
sinpi cospi = 2 * 0 * (-1) = 0
<span>Hence “A” and “C” are correct.</span>
Answer:maybe 9 but if not is 8 and the seond is 321
Step-by-step explanation:
Answer: 112
Step-by-step explanation:
Given : Significance level : 
Critical value: 
Margin of error : E = 9%=0.09
The estimated proportion of caret : p =0.38
Now, the formula to find the sample size :-
i.e. 
Hence, the required minimum sample size = 112
Answer: 282
Step-by-step explanation: just multiplícate it by 4
93, 94, 95, 89, 85, 82, 87, 85, 84, 80, 78, 78, 84, 87, 90.
artcher [175]
Answer:
86 is the mean and the median is 85
Step-by-step explanation:
To calculate the mean all u gotta do is add all the numbers then divide by how many numbers there is and to calculate the median all u gotta do is put them in order 78-95 then mark 1 on each side til you reach the middle and the number in the middle is the answer.
