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Tomtit [17]
3 years ago
10

Which expression is equivalent to sin^2 x-sin x - 2/sin x -2

Mathematics
1 answer:
Sliva [168]3 years ago
3 0
Set sin x to a variable, i.e. u

u^2-u-2/u-2.

Factor:

(u-2)(u+1)/(u-2)

Simplify by canceling the u-2s...

leaving u+1. Since we substituted u for sin x...
the answer is A. sin x + 1
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