Question

Plz solve the problem with full explanation and don't answer if you don't know I will report..and if write answer I will mark as the Brainliest ....​

Answer 1

Answer:

cos( 4/π −x)cos( 4/π −y)−sin(4/π −x)sin( 4/π−x)

We know that, cos(A+B)=cosAcosB−sinAsinB

Here, A= 4/π −x,B= 4/π −y

A+B= 2/π −(x+y)

cos( 4/π −x)cos( 4/π −y)−sin( 4/π −x)sin( 4 π−x)=cos( 2/π −(x+y))=sin(x+y)

it took me.long time to write and it is correct answer

follow and Mark as brainlist

thank you

Answer 2

Step-by-step explanation:

sister thank you for answering my questions

but how come 26 outcomes I dint understan

will u please explain me clearly

once again