Answer:
Step-by-step explanation:
A positive rational is any real number that can be written in the form a/b, where a and b are positive integers. ... A negative rational is any real number that can be written in the form -a/b, where a and b are positive integers.
C. Cos(60°) = Sin(30°)
Cos(60°) = 0.5
Sin(30°) = 0.5
Answer:-1
Step-by-step explanation:3-4=-1
