Math, asked by ghanashyamhn, 11 months ago

prove that sin x + sin 3x by cos x + cos 3x = tan2x

Answers

Answered by sandy1816

0

Step-by-step explanation:

sin3x+sinx/cos3x+cosx

=2sin2xcosx/2cos2xcosx

=sin2x/cos2x

=tan2x

Answered by shyjiamruth

2

Answer:

refer to the attached file

Step-by-step explanation:

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