Cos( A + B ) = cosAcosB - sinAsinB ;
cos( A + B ) / ( cosAsinB ) = ( cosAcosB - sinAsinB ) / ( cosAsinB ) = ( cosAcosB ) / ( cosAsinB ) - ( sinAsinB ) / ( cosAsinB ) = cosB / sinB - sinA / cosA = cotB - tanA ;
Answer:
The first and third is correct.
Step-by-step explanation:
I'm not a expert but I know its right.
Answer:
the answer is 2.7777
Step-by-step explanation:
You just divide!
17x11=187 need more character there done