Solution 4.4:1e

From Förberedande kurs i matematik 1

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Current revision (13:18, 10 October 2008) (edit) (undo)
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There is no angle
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There is no angle <math>v</math> which gives <math>\cos v = 2</math>, because the value of cosine is always between <math>-1</math> and <math>1\,</math>.
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<math>v</math>
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which gives
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<math>\text{cos }v\text{ }=\text{2}</math>, because the value of cosine is always between
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<math>-\text{1}</math>
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and
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<math>\text{1}</math>.
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[[Image:4_4_1_e.gif|center]]
[[Image:4_4_1_e.gif|center]]

Current revision

There is no angle \displaystyle v which gives \displaystyle \cos v = 2, because the value of cosine is always between \displaystyle -1 and \displaystyle 1\,.