Question

w= -------- × =---------- × cos O​

Answer 1

Answer:

here is your answer

sin,cot

hope it will help you

Answer 2

Answer:

cos x = 0, when x = ±π/2, ±3π/2, ±5π/2, … It means that cos x vanishes when x is an odd multiple of π/2. So, cos x = 0 implies x = (2n + 1)π/2 , where n takes the value of any integer.