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2 years ago

In a right triangle, if tan x = 1/2 then what is cos x

Mathematics

1 answer:

NARA [144]2 years ago

5 0

Answer:

2√5

cos x = -------------

Step-by-step explanation:

If tan x = 1/2 then what is cos x?

Recall that tan x is defined as the quotient sin x / cos x, so that in this case sin x / cos x = 1 / 2 = opp side / adjacent side. Also, recall that cos x = adj side / hypotenuse.

To determine cos x, we need to find the length of the hypotenuse. That, in turn, through use of the Pythagorean Theorem, is √(1^2+2^2), or √5.

Then cos x = adj side / hyp = 2/√5. Rationalizing the denominator, we get

2√5

cos x = -------------

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2 years ago

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3 years ago

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3 years ago

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2 years ago

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WITCHER [35]

Answer: Hello your question lacks some details attached below is the complete question

answer:

Place a compass at point Q ,
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Step-by-step explanation:

The steps required to draw an arc intersecting the line that will create a segment with length PQ are ;

Place a compass at point Q , measure arc PQ

Draw an arc with the compass that is equal to PQ , Place the compass at point R , cut through the line to the left of R with the arc in compass,

Assume the new points to be P' and R be Q' , where P' Q' will become the new image of PQ with their end point will be R

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2 years ago