Math, asked by lakshna1322008, 8 months ago

Part-2
Show that tan 70° – tan 20º = 2tan 40° + 4tan 10°.

Answers

Answered by ndave4832

1

Step-by-step explanation:

2(cot 40 - tan 40)= 2(2cot 80)

=4 cot (90-10)

= 4 tan 10

please mark my answer as brainliest

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