It takes three identical water pumps 8 hours to fill a pool.
1 answer:
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Correct Option:
Option B
Solution:
The given expression is:
cos(3x) can be written as cos(2x +x). Expanding it, we get:
Using this value of cos(3x) in given equation, we get:
Option B
Solution:
The given expression is:
cos(3x) can be written as cos(2x +x). Expanding it, we get:
Using this value of cos(3x) in given equation, we get: