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navik [9.2K]
3 years ago
11

Exercise questions

Mathematics
1 answer:
balu736 [363]3 years ago
3 0

Answer:

2.

a)1

b)1

c)1

Step-by-step explanation:

There's some identity trigonometric equation, which are valid for all angles,and they doesn't depends on the measure of angle!

some of em are follows:. (x is the given angle)

  • sin(x)^2+cos(x)^2=1
  • cosec(x)^2=1+cot(x)^2
  • sec(x)^2=1+tan(x)^2

You can remember these identity, its gonna help alot.

now back to question,. {x is representing angles)

for (a) sin(x)^2+cos(x)^2=1, this is true for all x, dat means that for all the angle given in question(for ,15°,30°,45°,60° and 120°),we will get 1

for(b) ,

cosec(x)^2=1+cot(x)^2

i.e, cosec(x)^2-cot(x)^2=1, again this is true for all x dat means that for all the angle given in question ,we will get 1

for (c),

sec(x)^2=1+tan(x)^2

i.e,sec(x)^2-tan(x)^2=1,again this is true for all x, dat means that for all the angle given in question ,we will get 1

✌️:)

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Determine the level of measurement of the variable. an officer's rank in the military Group of answer choices
ElenaW [278]

Answer:

Ordinal

Step-by-step explanation:

Level of measurement used in statistics summarizes what statistical analysis that is possible. There exist three types of level of measurement. The nominal, ordinal and Interval/Ratio level of measurement. Here, our primary focus will be the Ordinal level of measurement.

Ordinal level of measurement indicates the position in a sequence. In the military sector, the officer's rank is said to be Ordinal. This implies that the ordinal level of measurement categorizes variables according to hierarchy or ranks with a meaningful order. Still, the intervals and differences between the variables may not be equal.

3 0
3 years ago
Determine if the given set is a subspace of set of prime numbers P 2. Justify your answer. The set of all polynomials of the for
devlian [24]

Answer:

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Step-by-step explanation:

Check attachment

7 0
3 years ago
Can someone help me for this question?​
Taya2010 [7]

Answer:

2x + 1y =< 300

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Step-by-step explanation:

Let x and y be the numbers of corndogs and shakes that will be sold.

<u>1.</u>  The total cost of making these items is given by the sum of:

(x)(RM2) + (y)(RM1)

A total of RM300 is allocated for the cost of these items, so:

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<u>2.</u> Sales are expected to exceed 150 units, in total.  This means:

x + y =>150 units

<u>3.</u>  Sales for the shakes is less than 2 times that of the corndogs:

y <= 2x

5 0
2 years ago
Which fraction would make this equation true? 4x ? = 6 2/3
MrMuchimi
Divide 6 2/3 by 4 and you get an x value of 1.67 to double check the answer we can multiply 1 2/3 by 4 and we get 6 2/3
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Step-by-step explanation:

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between 4 and 5

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