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2 years ago

I need help on this may you help

Mathematics

1 answer:

HACTEHA [7]2 years ago

6 0

Answer:

should be 63

Step-by-step explanation:

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Find sin(x/2), cos (x/2), and tan(x/2) from the given information.

zhannawk [14.2K]

Step-by-step explanation:

sin(x/2) = sqrt((1 - cos(x))/2)

cos(x/2) = sqrt((1 + cos(x))/2)

tan(x/2) = sin(x/2)/cos(x/2)

sin(x) = 15/17

so, we can assume the Hypotenuse of the right-angled triangle is 17, the vertical leg is 15.

via Pythagoras we get the 3rd, horizontal side :

17² = 15² + side²

289 = 225 + side²

64 = side²

side = 8

cos(x) = 8/17

sin(x/2) = sqrt((1 - 8/17)/2) = sqrt(9/34) = 3/sqrt(34) =

= 0.514495755...

cos(x/2) = sqrt((1 + 8/17)/2) = sqrt(25/34) = 5/sqrt(34) =

= 0.857492926...

tan(x/2) = 3/sqrt(34) / 5/sqrt(34) = 3/sqrt(34) × sqrt(34)/5 =

= 3/5 = 0.6

6 0

2 years ago

Simplify 28/184 by reducing to lowest form A) 1/46 B) 1/7 C) 14/92 D) 7/46

Elodia [21]

It’ll be D) 7/46 you can reduce it by dividing everything with 4

5 0

3 years ago

Ronald rode his bicycle 3 kilometers south and 4 kilometers east. How far from his starting point is he?

WARRIOR [948]

He is 7 Kilometers southeast far from his point

3 0

3 years ago

Read 2 more answers

A family buys 4 airline tickets online. The family buys travel insurance that costs $19 per ticket. The total cost is $752. Le

kumpel [21]

(x•19)4=752

x would be multiplied by 19 then after it’s getting multiplied by 4.

3 0

3 years ago

Which of the following is NOT a possible value for the correlation coefficient? 1) negative 0.9 2) zero 3) positive 0.15 4) posi

AnnyKZ [126]

Answer:

4) positive 1.05

Step-by-step explanation:

Correlation:-

Correlation is a statistical measure that indicates the extent to which two or more variables fluctuate together.

Examples:i) The yield of a crop varies with the amount of rainfall

ii) The price of a commodity increases with the reduction in its supply and so on.

That is when the changes in one variable are associated or followed by changes in the other, is called correlation

positive correlation:- If an increase (or decrease ) in the values of one variable corresponds to an increase(or decrease ) in the other, then correlation is said to be positive.

negative correlation:- If an increase (or decrease ) in the values of one variable corresponds to an decrease(or increase ) in the other, then correlation is said to be negative.

no correlation:-

If there is no relationship indicated between the variables,they are said to be independent or uncorrelated.

uses of correlation:-it is used in presenting the average relationship between any two variables through a single value of co-efficient of correlation. correlation is a statistical technique that can show whether and how strongly pairs of variables are related.

The range of correlation is $-1\leq r\leq 1$

r=-1 is the negative correlation

r=1 is the positive correlation

so the answer is not a possible value for the correlation coefficient is positive 1.05.

4 0

3 years ago