Solve for K 20-6 + 4K =2-2k
1 answer:
Answer:
<h2><em><u>K</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>-2</u></em></h2>Step-by-step explanation:
20-6 + 4K =2-2k
=> 14 + 4k = 2 - 2k
=> 4k + 2k = 2 - 14
=> 6k = -12
=> <em><u>K</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>-2</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>
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Answer:
40°
Step-by-step explanation:
The reference angle is the positive acute angle created by the terminal arm and the x-axis.
The highlighted red in the picture below shows what we're looking for.
The arm rotated 220° (but 'backwards' so the value given is negative).
|-220°| - 2(90°) <= Subtract two right angles for two quadrants
= 220° - 2(90°)
= 220° - 180°
= 40°
Therefore, the reference angle is 40°.
If you got 50°, you probably calculated the angle with the terminal arm and the y-axis. Remember to always use the nearest side of the x-axis!
Answer:
170°
Step-by-step explanation:
To convert from radians to degrees
degree measure = radian measure × , thus
degree = ×
Cancel π on numerator/denominator and 18/ 180 by 18
degree measure = = 17 × 10 = 170°