Answer:
the answer is
cause sin²x= 2/25
so cos²x would be 1-2/25= 23/25
then cos x is what I wrote as the answer
sry i dont know
Step-by-step explanation:
lolz
(x+1)(x-1)(x^2+9)
Answer: it triples by 3 so 15,45, 135
Step-by-step explanation: this is by 3 because it goes on by 15,45,135