Mathematics, 04.03.2021 06:50 odetteerivera

I am struggling getting past this point. The problem is prove:
[cos(x-y)]/[cos(x+y)]=[1+tanxtany ]/[1-tanxtany]

I am struggling getting past this point. The problem is

prove:[cos(x-y)]/[cos(x+y)]=[1+tanxtany]/

Answers: 2

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I am struggling getting past this point. The problem is prove:
[cos(x-y)]/[cos(x+y)]=[1+tanxta...

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I am struggling getting past this point. The problem is prove:[cos(x-y)]/[cos(x+y)]=[1+tanxtany ]/[1-tanxtany]​

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Another question on Mathematics

I am struggling getting past this point. The problem is prove:
[cos(x-y)]/[cos(x+y)]=[1+tanxtany ]/[1-tanxtany]