Answer:
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Step-by-step explanation:
Since we are in quadrant two, cosine value is negative while sine value is positive.
We are going to use the Pythagorean Identity:
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Since cosine and secant are reciprocals then they will have the same sign as along as they both exist.

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I don't see this answer as I'm going to rationalize the denominator.
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Answer:
(2n+6)^2
Step-by-step explanation:
To solve this, you can use the given formula: x^2 + 2xy + y^2
In this case, 4n^2 is x^2, 24n is 2xy, and 36 is y^2. The next step is:
(2n)^2 + 2(2n)(6) + (6)^2
Since this equation fits into this formula ( x^2 + 2xy + y^2), we can do:
(2n+6)(2n+6) =
(2n+6)^2
Hence, the answer is (2n+6)^2
Answer:
Efficiency (Work done per day) for :
( ˘ ³˘)/
A & B together = 1/35th
A alone = 1/60th
Thus, efficiency of B alone = Total - A’s efficiency
Step-by-step explanation:
OR Efficiency of B alone = (1/35) - (1/60) = 6/210 - 3.5/210 = 2.5/210 = 1/84th
Hence, since B completes 1/84th work daily, he would take 84 days to complete the work alone.
2.95, because 0.15×7 equals 1.05. Then you subtract that from 3 and you get 2.95! Hope I helped!