Answer:
Step-by-step explanation:
If then
by combining like terms. (I'm thinking you might have mistyped the problem because this representation is weird).
Answer:
$190 is the answer
minus $5 from $97.50 and add that number to $97.50
Answer:
X=0
(8,7)
Step-by-step explanation:
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb