lizdeleon248

11.12.2019 • 

Mathematics

Astudent is given that point p(a, b) lies on the terminal ray of angle , which is between radians and 2 radians. the student uses the steps below to find cos . step 1 find the quadrant in which p(a, b) lies: p(a, b) is in quadrant iv. step 2 use the point and the pythagorean theorem to determine the value of r: , but since r must be positive, . step 3 determine cos . , where a and b are positive. which of the following explains whether the student is correct? the student made an error in step 3 because a is positive in quadrant iv; therefore, . the student made an error in step 3 because . the student made an error in step 2 because r is negative in quadrant iv; therefore, . the student made an error in step 2 because using the pythagorean theorem gives .

Ответ:

jennifer9983

12.01.2022

Mathematics

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A

Step-by-step explanation: Just took the test on edg

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Ответ:

jaylabazemore

26.02.2021

Mathematics

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x = -1

y = 2

Step-by-step explanation:

6x + 5y = 4

6x - 7y = -20

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12y = 24

y = 24/12

y = 2

6x + 5y = 4 | ×7 |

6x - 7y = -20 | ×5 |

42x + 35y = 28

30x - 35y = -100

+

72x = -72

x = -72/72

x = -1

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