Math, asked by dikshantpoudel800, 10 months ago

Without using calculator
Prove that cot 20°= 2tan50° +tan20°

Answers

Answered by Sssddh

0

Answer:

Step-by-step explanation:

2tan50=tan70-tan20

So substitute this in above problem

Then

=Tan70-tan20+tan20

-tan and +tan gets cancelled

=Tan70

=Tan(90-20)

=Cot20

HENCE PROVED

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