Question

214. Given that sino + 2coso = 1, then prove that 2sino - coso=2
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Answer 1

Answer:

2cos0=1-Sin0

Squaring

4cos0=cos20

4 (1-sin20)=cos20

4-4sin20=cos20

root of 4-4sin20=cos0

2-2sin0=cos0

2sin0-cos0=2 Hence proved