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Nana76 [90]
2 years ago
7

1. Prove that 2 tan x / 2- sec^2 x = tan 2x.

Mathematics
1 answer:
Vikentia [17]2 years ago
8 0

Answer:

Step-by-step explanation:

Use trig identities:

1

+

tan

2

x

=

1

cos

2

x

=

sec

2

x

(

1

−

tan

x

)

=

1

+

tan

2

x

−

2

tan

x

=

sec

2

x

−

2

tan

x

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Answer:

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Step-by-step explanation:

to solve this equation we say

let

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from equation 2

4y-x=-3............................................equation 2

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i.e

x = 4y + 3 .............................................  equation 3

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3y/3 = -3/3

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Step-by-step explanation:

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