The pedals on a bicycle have a maximum height of 30 cm above the ground and a minimum distance of 8 cm above the ground. Jho-Ann pedals at a rate of 20 cycles per minute.
a) What is the period, in seconds for this function?
b) At π = 0, Jho-Anns right foot is closest to the ground
i) Write 2 equations that represent the height of her right foot above the ground; 1 sine; 1 cosine
ii) For how long per cycle is Jho-Anns right foot 20 cm, or higher, above the ground.