Math, asked by charandeeppassi, 9 months ago

Q3.
cot A
Prove that:
1+tan A
cot A-1
2 - sec? A

Answers

Answered by jaskawal

1

Answer:

tan 2 A=cot( A-18°)

cot(90-2A)=cot(A-18)

by cancelling cot from both sides

90-2A=A-18

90+18=A+2A

108=3A

A=108/3=36°

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