Math, asked by jasrajsingh530, 3 months ago

sin x-sin 3x/sin²x-cos²x = 2sinx

Answers

Answered by siddharthkolpe2005

0

Answer:

L.H.S=R.H.S

Step-by-step explanation:

LHS :

sin

2

x−cos

2

x

sinx−sin3x

=

−(cos

2

x−sin

2

x)

2sin(

2

x−3x

)cos(

2

x+3x

)

=

−cos2x

2sin(−x)cos2x

=

−cos2x

−2sinxcos2x

=2sinx

= RHS

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