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Prove tan 50 - tan 40- tan 10 = tan50.tan40.tan10​

1 Answer

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Therefore,tan50= tan(40+10)

or, tan50= tan40+tan10/1-tan40tan10

or, tan50{1-tan40tan10}= tan40+tan10

or, tan50-tan50.tan40.tan10= tan40+tan10

or,tan50-tan40-tan10= tan50. tan40. tan10

User Alexandre Santos
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