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

........ help ASAP please....-example-1
User Tim VN
by
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1 Answer

2 votes

Answer:

See below

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

User Prasanth P
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