Question #f48cc

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Question #f48cc

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Answer 1 · 2017-12-04T16:59:27

WRONG STATEMENT

Explanation:

$sin x \cdot cos (x + y) + cos x \cdot sin (x + y)$ $sinx cdotcos(x+y)+cosxcdot sin(x+y)$
$= cos x \cdot cos (x + y) {\frac{sin x \cdot cos (x + y) + cos x \cdot sin (x + y)}{cos x \cdot cos (x + y)}}$ $=cosx cdot cos(x+y){(sinx cdotcos(x+y)+cosxcdot sin(x+y))/(cosx cdot cos(x+y)}}$
$= cos x \cdot cos (x + y) \cdot {tan x + tan (x + y)}$ $=cosx cdot cos(x+y) cdot {tanx + tan(x+y)}$

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Question #f48cc

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