EKA

How to prove this question with using a LS=RS-style Proof? csc^2(x)cos^2(x) = csc^2(x)-1

Pick 2 consecutive, positive integers and call them a and b. Prove that a/2 + b/2 >/= 1. what does it mean by consecutive and positive integers? and how you can prove it? Thank You..

determine the values of a,b,c,and d for a sinusoidal equation in the form: y= a sin b(x-c)+d and y= a cos b(x-c)+d using the max= 23.1 and min= -19.7 to determine the value. how to determine the values? thank you..

@Don & Reiny: thank you very much.. I really understand your answers after 3 hours of tried them by myself. thank you so much.. :D

how to find the value of C? and if you don't mind can you tell me the period too? thank you..