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leva [86]
2 years ago
13

Need help please

Mathematics
1 answer:
svp [43]2 years ago
4 0
-6,6 if it reflects on the left side
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Evaluate the expression Arcsec(sqrt 2). Do not use your calculator to answer this question. Do not express answer in decimals.
Igoryamba
Pi/4 radians  
You're looking for the angle that has a secant of sqrt(2). And since the secant is simply the reciprocal of the cosine, let's take a look at that.
 sqrt(2) = 1/x
 x*sqrt(2) = 1
 x = 1/sqrt(2)
 Let's multiply both numerator and denominator by sqrt(2), so
 x = sqrt(2)/2 
 And the value sqrt(2)/2 should be immediately obvious to you as a trig identity. Namely, that's the cosine of a 45 degree angle. Now for the issue of how to actually give you your answer. There's no need for decimals to express 45 degrees, so that caveat in the question doesn't make any sense unless you're measuring angles in radians. So let's convert 45 degrees to radians. A full circle has 360 degrees, or 2*pi radians. So:
 45 * (2*pi)/360 = 90*pi/360 = pi/4 
 So your answer is pi/4 radians.
5 0
3 years ago
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Write a fraction pair of fractions with a common denominator: 1/3 and 3/4
melamori03 [73]
4/12 plus 9/12 =15/12=1 3/12 = 1 1/4
3 0
2 years ago
Is 56/7 a rational number or
Sati [7]

Answer:

Yes

Step-by-step explanation:

The definition of a rational number is a number that can be represented as a fraction. Since 56/7 is a fraction it must be a rational number. An irrational number is a number that cannot be represented as a fraction because it never ends and repeats without a pattern forever. An example of this is pi because pi can never exactly be represented as a fraction.

4 0
2 years ago
Ms. Parker earns $5 per hour babysitting. She already had $2 before she started. How
PtichkaEL [24]

Answer:

4 hours

Step-by-step explanation:

simply multiply

4 0
3 years ago
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Leya [2.2K]

Answer:

C=4n

im sure this is the correct one

3 0
2 years ago
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