Question

solve
$sinx - cosx - tanx = 0$
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Answer 1

Answer:

Explanation :

1. sinx - cosx - tanx = 0
2. 1/cosx - 1/sinx - sinx/cosx = 0
3. 1/cosx - sinx*cosx/sinx*cosx - cosx = 0
4. 1/cosx - 1/cosx = 0
5. sinx - sinx = 0

0 = 0. proved