CSSA question 9(a) 2009 (1 Viewer)

[Nekoccino]

Could someone please explain to me how they got from the first step to the second?
sin pi/35 t = 0
pi/35 t = pi
hence t = 35 minutes....



Thank you in advance ^^

 

[InteGrand]

Could someone please explain to me how they got from the first step to the second?
sin pi/35 t = 0
pi/35 t = pi
hence t = 35 minutes....
View attachment 32133


Thank you in advance ^^

The first time for t > 0 that is when . (Because the first positive x-intercept of the graph of y = sin x is at , and think of the as 'x'.)

 

[Nekoccino]

I understand now ^^
Thank you

Also because sin (x) =0 when x= 0 and pi
however, it can't be zero because said "AFTER" a particular time.
Thank you once again ^^