jturner677 jturner677

26-04-2022
Mathematics

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if sin18=0.3090, cos 18=0.9511, sin 22=0.3746, and cos22=0.9272, then what is sin4

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Аноним Аноним

26-04-2022

Answer:

[tex]0.6428[/tex]

Step-by-step explanation:

Using the addition formula for sine

[tex]sin(x + y) = sinxcosy + cosxsiny[/tex]

[tex]sin40 = sin(18 + 22)[/tex]

[tex]= sin18cos22 + cos18sin22= (0.3090 * 0.9272) + (0.9511 * 0.3746)= 0.2865 + 0.3563= 0.6428[/tex]

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