marts2100 marts2100

28-01-2017
Mathematics

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find the exact value of 11pi/2

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cmrohling cmrohling

28-01-2017

8pi/2 is 2 complete revolutions so 11pi/2 is the same as 3pi/2 as far as the value of sine is concerned.
On the unit circle, 3pi/2 is the point (0,-1) DRAW it do see what i mean.
sine is given by the y value on the unit circle so sin(3pi/2)= -1
So
sin(11pi/2)= -1

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