Question

respiratory cycle is defined as the beginning of one breath to the beginning of the next breath. The rate of air intake r (in L/sec) during a respiratory cycle for a physically fit male can be approximated by r(t) = 0.85 sin(π/4.5 t), where t is the number of seconds into the cycle.

Answer 1

Answer:

respiratory cycle works properly .....

Answer 2

here is the answer

the respiratory system works very good and properly

f(x)=sin^2x-cos^2x=-(cos^2x-sin^2x)= - cos2x Therefore, f(π/12)=- Cos(2*π/12) =-cosπ/6=-√3/2 f(π/12)=-√3/2. ·