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patriot [66]
3 years ago
13

How do you solve this?

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0

Answer:

u put 90 was that the answer

Step-by-step explanation:

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Which shows all the exact solutions of sin^2 x + 3cos x - 1 = 2?
Zarrin [17]

Answer:

x = 2k\pi is the solution of this equation.

Step-by-step explanation:

This question is related to trigonometric equations.

The given equation is,

sin^{2} x + 3cos x - 1 = 2

We have to find the solutions of this equation.

Put sin^{2}x  = 1 - cos^{2}x

1 - cos^{2}x + 3cosx - 1 = 2

cos^{2}x -3cosx+2 = 0

For this equation only cosx = 1 is possible solution.

Cosx = 1 happens when x is a multiple of 2\pi

So x = 2k\pi is the solution of this equation.

3 0
3 years ago
PLEASE HELP! HURRY! since its 2 questions, ILL GIVE MORE POINTS!
VARVARA [1.3K]

A. m = 0 || This is incorrect, because m being equal to 0 is a solution in and of itself.

B. m = m || This is incorrect, because m being equal to itself means that there are an infinite number of solutions.

C. 2m + 1 = m - 2 | m = -3 || This is incorrect, because m can be solved for and has a solution.

D. m + 4 = m - 4 | 4 = -4 || This is correct because 4 is not equal to -4, and thus there is no solution.

Hope this helps!! :)

6 0
4 years ago
Calculus Ch. 1.2 Classwork Problems Evaluating limits Graphically
nirvana33 [79]

Answer:

8) 1

9) -4

10)  -3

11)  -1

12)  1

13)  doesn't exist

14)  1

15)  doesn't exist

Step-by-step explanation:

8) when we approach x=-8 from left and from right, the function tends towards the value 1

9) when we approach x = -7, from the left the function gets towards 0, while when we approach it from the right it gets closer to -4

10) f(-3) = -3

11) When x approaches the value 4 from the left and from the right, f(x) gets closer to -1

12) f(4) is defined as 1

13) f(6) doesn't exist

14)  When x approaches 6 from the left and from the right, the function approaches 1

15)  When x approaches the value 7 from the left the function gets closer to 2, while when we approach x = 7 from the right the function gets toward 7. Because of this discrepancy, the limit doesn't exist.

3 0
4 years ago
20 students plays football and 16 students plays hockey.It is found that 10 students plays both game.Find the number of students
Bess [88]
36 because in total there are 46, 20 playing football, 16 playing hockey and 10 who plays both so if you add 20+16+10 you get 46, but then you take away the 10 who play both to get an answer or 36 students
3 0
3 years ago
ΔTUV∼ΔMLV
Musya8 [376]

Answer:

98

Step-by-step explanation:

From the statement of similarity, we can write this proportion.

TV/MV = UV/LV

28/x = 16/56

16x = 28 × 56

x = 7 × 14

x = 98

4 0
2 years ago
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