Math, asked by aashishsrisaieluru, 10 months ago

Cos 9 degrees+sin 9 degrees/cos 9 degrees-sin 9 degrees=tan 54 degrees

Answers

Answered by todinson255

1

Answer:

Step-by-step explanation:

tan(54 )=tan(45+11)

=tan45+tan9/1-tan45tan9

=1+tan9/1-tan9

=cos9+sin9/cos9-sin9=tan(54)

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