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BlackZzzverrR [31]
3 years ago
6

16/7 - 1/14 subtracting fractions

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0

Answer:

31/14

Step-by-step explanation:

We first need to get common denominators, so we multiply the 16 and the 7 by 2, to get 32/12. Now we can subtract since the fractions have common denominators. After subtracting we get 31/14 or 2 3/14. Hope this helps!

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Answer:

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Rewrite with only sin x and cos x.
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Option A

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<em><u>Solution:</u></em>

Given that we have to rewrite with only sin x and cos x

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We know that,

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

Therefore,

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Substituting these values in eqn 1

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\cos (x+2 x)=\cos x\left(1-2 \sin ^{2} x\right)-\sin x(2 \sin x \cos x)

\begin{aligned}&\cos (x+2 x)=\cos x-2 \sin ^{2} x \cos x-2 \sin ^{2} x \cos x\\\\&\cos (x+2 x)=\cos x-4 \sin ^{2} x \cos x\end{aligned}

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Option A is correct

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Step-by-step explanation:

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