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Luden [163]
3 years ago
5

Plzzz show the proof for meeee​

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
7 0

Step-by-step explanation:

cos(A + B) cos(A − B)

Use angle sum/difference formulas:

(cos A cos B − sin A sin B) (cos A cos B + sin A sin B)

Distribute:

cos² A cos² B − sin² A sin² B

Use Pythagorean identity:

cos² A (1 − sin² B) − (1 − cos² A) sin² B

Distribute:

cos² A − sin² B cos² A − (sin² B − sin² B cos² A)

cos² A − sin² B cos² A − sin² B + sin² B cos² A

cos² A − sin² B

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So, We Need To Examine The Problem. So, We Know That We Need To Find The Volume Of A Rectangular Prism. We Also Know That The Dimensions Are 4.9 • 3.8 • 5.4.
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V = 100.548cm²
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3 years ago
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