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Hunter-Best [27]
3 years ago
12

How do you find exact values?

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

Answer:

Using trigonometric identities: A trigonometric identity is a relationship between trigonometric functions that we can use to find an exact value of a trigonmetric function.Using the unit circle: The unit circle is a circle with its center at the origin and a radius of 1 unit. If we place an angle, θ, with its initial side along the positive x-axis, then the point where the angle's terminal side intersects the unit circle is (cos(θ), sin(θ)).Using reference angles: Reference angles are the smallest angle that the terminal side of an angle makes with the x-axis. As it turns out, trigonometric functions of an angle and its reference angle have the same value, except that they may have different signs.

For example, suppose we want to find the exact value of tan(405°). First, we take a look at the angle 405° on a graph with the unit circle:

in this that the reference angle of 405° is 45°. We can use the fact that tangent is positive in the first quadrant and the rule for reference angles to deduce that tan(405°) = tan(45°). Then we can use the well-known fact that tan(45°) = 1 to get that tan(405°) = 1.

Step-by-step explanation:

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Answer:

20

Step-by-step explanation:

Work backwards. If -2 x 2= -4 then something plus negative four will equal 16, which is 20.

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Ne4ueva [31]

Answer:

p = 5.88/3 –.75

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Step-by-step explanation:

To find the new price per pound, divide 5.88 by 3.

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What is half of the fraction 3/4
schepotkina [342]
The half of 3/4 is 0.375, or 3/8. All you have to do is multiply 3/4 times 1/2. 
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Lostsunrise [7]

Answer:

Side KL.

Step-by-step explanation:

Side KL will have a negative slope due to the reflection of side 1 , then the 90 degree clockwise rotation will  will take it down  towards the x axis and it will then have a positive slope,

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6.106x10^7 in standard form
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