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yarga [219]
3 years ago
12

Verify the identity. tan^5x = tan^3xsec^2x -tan^3x

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
5 0
Tan^5x=tan^3x∗tan^2x
sin^2x+cos^2x=1
tan^2x+1=sec^2x
tan^2x=sec^2x−1
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Solve this equation using elimination: 4x-y=8;6x+y=2
fomenos
Solve simultaneously.

4x - y = 8
6x + y = 2


Multiply top equation by 6, and bottom equation by 4, to eliminate x, so that we can find y.
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24x - 6y = 48
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Put y back in to an equation, such as 4x - y = 8.
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