Current location - Training Enrollment Network - Mathematics courses - [Senior High School Mathematics Compulsory 4-person Education Edition B: Images and Properties of Sine Function and Cosine Function] In the following questions,
[Senior High School Mathematics Compulsory 4-person Education Edition B: Images and Properties of Sine Function and Cosine Function] In the following questions,
Because 1

π-3 is obtained from π < 4.

by 3; 0

So 0

By π > 3 to π-2 >; 3-2 is π-2 >; 1 also came out.

π/2 is obtained from π < 4.

So there is 0.