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soccerhannah290
09.07.2019 •
Mathematics
(y+x)° 2x° (y-x)° what's the answer plz
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Ответ:
Remark
Vertically opposite angles are equal, which means that 2x = y - x
Side by side angles are supplementary which, in this case 2x + (y + x) = 180o
Solution
From the first equation we get
2x = y - x Add x to both sides.
2x + x = y
3x = y
From the second equation we get
2x + (y + x) = 180 Remove the brackets
2x + x + y = 180
3x + y = 180 Substitute 3x = y in this equation
3x + 3x = 180
6x = 180
x = 180/6
x = 30
y = 3x
y = 3*30
y = 90
Answer
x = 30
y = 90
Ответ:
9514 1404 393
sin(63°) = 0.891
Step-by-step explanation:
The cosine of an angle is the sine of its complement. The angle with a sine of 0.891 is 90° -27° = 63°.
sin(63°) = 0.891