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Prove the identity:
sin ((x))-(y)) / cos (x) sin (y) = tan (x) cot (y) - 1

1 Answer

6 votes

Answer:

Below.

Explanation:

sin ((x))-(y)) / cos (x) sin (y)

sin x cos y - cos x sin y

= ----------------------------------

cos x sin y

sin x cos y

= ---------------- - 1

cos x sin y

But tan x = sin x / cos x and cot y = cos y / sin y

So the above = tan x cot y - 1.

User GeoBeez
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