The flight time of a shell shot at angle φ and initial velocity v is t(f)= 2v/g sinφ. compute the average flight time for φ in the interval [π/6,π/4]

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

the answer is d. (1.2, -4.7) on edgn

hope this !