Depends what you mean by better. The 17 degree deadrise will cut through the waves better than the 21. However the 21 will plane faster and will be more stable at rest. So better is dependant on the use you are planning.
An acute angle
Between 15 and 20 degrees...
An acute angle is an angle less than 90°. So an angle of 17° is an acute angle.
17
2700 degrees
no it will give you a softride but very unstable in beam sea
Angle cpb is given as 17 degrees, and it's inside angle apb. Additionally, angle cpb is congruent to angle apc. That means angle apb is twice angle cpb, or twice 17 degrees, or 34 degrees.
An angle of 17 degrees would.
That is an acute angle.
An acute angle
The supplement of 17 degrees is 163 degrees.
Between 15 and 20 degrees...
An acute angle is an angle less than 90°. So an angle of 17° is an acute angle.
90-73 = 17 degrees
17 degrees is an acute angle because it's greater than 0 but less than 90 degrees.
17
42