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zhuklara [117]
4 years ago
10

Sin^(2)x-cos^(2)x=2sin^(2)x-1

Mathematics
1 answer:
ale4655 [162]4 years ago
4 0

Answer:

Step-by-step explanation:

sin^2 x+cos^2 x=1

cos^2 x-sin^2 x=1-2sin^2 x

cos^2 x=1-sin^2 x

substitute, you get

1-sin^2 x-sin^2 x=1-2sin^2 x

I just proved this.

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Step-by-step explanation:

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A set of weights includes a 5 lb barbell and 4 pairs of weight plates. Each pair of
Zina [86]

Answer:

The answer to this question would be B:

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Hope this reached you well :)

Step-by-step explanation:

20 = weight of the weight plates

x = amount of weight plates.

5 = weight of the barbell

f(x) = 20(0) + 5 = 5

f(x) = 20(1) + 5 = 25

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f(x) = 20(3) + 5 = 65

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3 years ago
A shipping box in the shape of a rectangular prism has a volume of 18x^3+5x^2-2x. what are three expressions that can represent
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Volume of the prism is given by:
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but
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3 years ago
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