Answer:
tanx + cotx =
Step-by-step explanation:
<u><em>Explanation</em></u>
Take R.H.S =
=
=
=
= tanx + cotx
tanx + cotx =
Since we are not given any information about the proportion, we will assume the sample proportion to be 0.50
so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)
The margin of error for population proportion is calculated as:
This means 271 students should be included in the sample
1: 200-75= r
2: 73-29= v
73-29=44
v=44
39.66 is the answer to the problem