Math, asked by ak437971, 6 months ago

(cos3A+cosA)/(sin3A+sinA)=cot2A prove it​

Answers

Answered by sandy1816
5

Answer:

your answer attacted in the photo

Attachments:
Answered by sk181231
7

Answer:

{\huge{\boxed{\red{\mathscr{SolutioN}}}}}

 =  \frac{cos3 \: A  + cos \: A }{sin3 \: A  \:  +  \: sin \: A }

 =  \frac{2 \: cos \: 2 \: A  \: cos \: A }{2 \: sin \: 2 \: A  \: cos \: A  \: }

 =  \frac{cos2 \: A }{sin2 \: A }

 = cot2 \: A 

Similar questions