Question

Sin 9π/8 больше или меньше нуля?

Answer 1

Меньше нуля
ответ -0.38

Answer 2

Меньше__________________
0.38

Answer 3

To determine whether sin(9π/8) is greater or less than zero, we need to find the sign of the sine function at the angle 9π/8.

The sine function is positive in the first and second quadrants of the unit circle (0 ≤ θ ≤ π) and negative in the third and fourth quadrants (π < θ ≤ 2π).

Let's calculate sin(9π/8):

sin(9π/8) ≈ -0.383

Since sin(9π/8) is negative (approximately -0.383), we can conclude that sin(9π/8) is less than zero.