(cos(x) + cos(y))^2 + (sin(x) - sin(y))^2 Remove the brackets
cos^2(x) + cos^2(y) + 2cos(x)*cos(y) + sin^2(x) - 2(sin(x)*sin(y) + sin^2(y) Combine these two in bold to make 1 because sin^2(x) + cos^2(x) = 1
1 + cos^2(y) + 2cos(x)*cos(y) - 2*sin(x)*cos(y) + sin^2(y)
These two in bold also make 1
2 + 2cos(x)*cos(y) - 2*sin(X)*sin(y) Bring out a common factor of 2
2 +2(cos(x)*cos(y) - sin(x)*sin(y) )
but cos(x+y ) = cos(x)*cos(y) - sin(x)*sin(y)
2 + 2* cos(x + y) is your final answer.
Answer: Han Fei Tzu was the creator of Legalism. Han Fei Tzu believed that people needed harsh rules and punishments just for people to do their everyday jobs. Confucius was the founder of Confucianism. Confucius believed that the duties to the family are important.
Step-by-step explanation: This is right bro.
Answer:
Step-by-step explanation:
Positive integers have values greater than zero. Negative integers have values less than zero.
Ok. I’m not the smartest person. But, if I understand the question I have to divide 288 by 2. That would be 144.. but it seems too easy. Correct me if I’m wrong
39 absolute value would be 39
