Cot^2x - cot^2x cos^2x
= cot^2x - {(cot^2x)(cos^2x)}
= cot^2x { 1 - cos^2x }
= cot^2x { sin^2x }
= (cos^2x/sin^2x) { sin^2x }
= cos^2x
12-28i
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Given,
Total number of time coin is flipped = 70
number of time coin lands on tail = 21
<h3>
What is Relative Frequency?</h3>
A relative frequency indicates how often a specific kind of event occurs within the total number of observations. It is a type of frequency that uses percentages, proportions, and fractions.
To find: relative frequency of coin landing on tail.

= 21 / 70
= 3 / 10
Relative frequency = 3 / 10 × 100
= 30%
To learn more about relative frequency from the given link
brainly.com/question/525194
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Answer:
A. x-2y-3z = 1/2
Step-by-step explanation:
yess.. if you take solve every equation then you will get same equation from all the equations
Answer:
Step-by-step explanation:
radius r = 5 cm
Height h = 5 cm
Volume of cylinder = πr²h
= π * 5 * 5 * 5
= 125π cm³