sss98s sss98s
  • 27-12-2020
  • Mathematics
contestada

........ help ASAP please....

help ASAP please class=
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Respuesta :

Hrishii
Hrishii Hrishii
  • 27-12-2020

Answer:

See below

Step-by-step explanation:

In the second step there should be (1 - cot x) instead of (1 + cot x)

(1 + tan x) [1 + cot(-x)]

= (1 + tan x) (1 - cot x)

= 1 - cot x + tan x - tan x cot x

= 1 - cot x + tan x - 1

= tan x - cot x

Answer Link

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