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29 April, 06:37

Which of these is equal to cos 19°?

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  1. 29 April, 08:29
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    Hello there.

    Which of these is equal to cos 19°?

    0.9455
  2. 29 April, 10:05
    0
    The question is which of these is equal to cos 19. Since there are no choices given, the only answer I could give is the approximate answer.

    cos 19° = 0.9455

    If the choices were other forms of trigonometric functions, you can use the trigonometric identities to prove that they are equal to cos 19° or you can use your calculator and input the choices and see which would result to 0.9455.
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