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25-09-2020
Mathematics

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sin3A/sinA-Cos3A/CosA=2

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25-09-2020

Answer:

sin3A/sinA-Cos3A/CosA=2

taking LCM

= Sin3A.CosA - Cos3A. SinA

SinA . CosA

= Sin(3A-A)

SinA . CosA

= Sin2A

SinA . CosA

= 2 SinA. CosA

SinA . CosA

=2

Step-by-step explanation:

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