1 year ago

I NEED HELP I DONT KNOW THIS ANSWER

Mathematics

1 answer:

Papessa [141]1 year ago

4 0

Answer:

Help with what

Step-by-step explanation:

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Round 48.078 to the nearest tenth

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Step-by-step explanation:

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ANSWER: 50

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4y p(y) => + 5. If y = 4, then what is the value of p(y)? 9 7 13 37

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Answer:

C. 13

Step-by-step explanation:

Put 4 where y is in the equation and do the arithmetic.

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2 years ago

(cos A + cos b)^2 + (sin A + sin B)^2=?

emmasim [6.3K]

First, we expand the equation:

$cos^{2}A+2cosAcosB+ cos^{2}B+sin^{2}A+2sinAsinB+sin^{2}B$

Then, we combine certain terms in order to simplify them using trigonometry identities.

$cos^{2}A+sin^{2}A+cos^{2}B+sin^{2}B+2cosAcosB+2sinAsinB$

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Pythagoran relation: $cos^{2}A+sin^{2}A = cos^{2}B+sin^{2}B=1$
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Thus, if we apply these identities, the simplified equation would be:
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Simplying further, the answer would be

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