Endim B1 trigonometri

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Areasatsen?

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23 Terms

1

Areasatsen?

A = ab/2 * sin(C)

<p>A = ab/2 * sin(C)</p>
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2

Sinussatsen?

sin(A) / a = sin(B) / b = sin (C) / c

<p>sin(A) / a = sin(B) / b = sin (C) / c</p>
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3

Cosinusatsen?

aĀ² = bĀ² + cĀ² - 2bc*cos(A)

<p>aĀ² = bĀ² + cĀ² - 2bc*cos(A)</p>
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4

Additionsformel fƶr sinus?

sin(a +b) = sin(a)*cos(b) + cos(a)*sin(b)

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5

Additionsformel fƶr cosinus?

cos(a +b) = cos(a)*cos(b) - sin(b)*sin(a)

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6

Additionsformel fƶr tangens? (ƶverkurs?)

<p></p>
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7

Hur hittar man tan(x) med hjƤlp av enhetscirkeln?

Man hittar tan(x) ā€œute pĆ„ā€ linjen x = 1

<p>Man hittar tan(x) ā€œute pĆ„ā€ linjen x = 1</p>
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8

Vad Ƥr lƶsningen till ekvationerna

(1) cos(x) = cos(y)

(2) sin(x) = sin(y)

(1) cos(x) = cos(y)

x = Ā± y + k * 2Ļ€

(2) sin(x) = sin(y)

x = y + k * 2Ļ€ eller x = Ļ€-y + k * 2Ļ€

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9

cos(x) = sin(?)

cos(x) = sin(Ļ€/2 - x)

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10

Trigonometriska ettan?

sinĀ²x + cosĀ²x = 1

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11

cos(2x) = ?? (3)

sin(2x) = ??

cos(2x) = cosĀ²x - sinĀ²x

cos(2x) = 1 - 2sinĀ²x

cos(2x) = 2cosĀ²x - 1

sin(2x) = 2sin(x) * cos(x)

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12

HjƤlpvinkelmetoden?

a*sin(Ļ‰*x) + b*cos(Ļ‰*x) = āˆš(aĀ² + bĀ²) * sin(Ļ‰*x + Ļ†))

dƤr vinkel Ļ† uppfyller

cos(Ļ†) = a / āˆš(aĀ² + bĀ²)

och

sin(Ļ†) = b / āˆš(aĀ² + bĀ²)

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13

A*sin(Bx + C) + D

Hur pƄverkar A, B, C och D sinuskurvan?

A - amplituden

B - ihoptryckning/tƶjning

C - fƶrskjutning Ƅt vƤnster/hƶger

D - fƶrskjutning uppƄt/nedƄt

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14

Vilka restriktioner pƄ x behƶvs fƶr att sin(x), cos(x) och tan(x) ska ha en invers?

sin(x): -Ļ€/2 ā‰¤ x ā‰¤ Ļ€/2

cos(x): 0 ā‰¤ x ā‰¤ Ļ€

tan(x): -Ļ€/2 ā‰¤ x ā‰¤ Ļ€/2

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15

Bara ett vƤrde som uppfyller arcsin(x), arccos(x) respektive arctan(x)

ej arcsin x = v + k*2Ļ€

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16

sinh(x) = ??

cosh(x) = ??

<p></p>
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17

Hyperboliska ettan?

coshĀ²x + sinhĀ²x = 1

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18

cosh x + sinh x = ??

cosh x + sinh x = ex

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19
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