Math, asked by harshitkeshari91, 1 month ago

Prove geometrically cos(x+y)=cosx×cosy-sinx×siny and hence show that cos 2x=cos²x-sin²x​.


please help me​

Answers

Answered by ssk305805
4

Answer:

I think it is helpful to you

Attachments:
Answered by ayushrajput909723
1

Answer:

hlo

hlo hlo h

hlo

hlo

hlo

hlo

hlo

hlh

hlo

hlo

hlo

Similar questions