Question

(b) For a function h(theta)=sin3 theta (Theta is in Radian).
Find h(pi/3)
Find h(pi/2)

Answer 1

Part (i)

Plug in theta = pi/3 to get

h(theta) = sin(3theta)

h(pi/3) = sin(3*pi/3)

h(pi/3) = sin(pi)

h(pi/3) = 0 ... use a calculator or the unit circle

Answer: 0

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Part (ii)

Plug in h = pi/2

h(theta) = sin(3theta)

h(pi/2) = sin(3pi/2)

h(pi/2) = -1

Answer: -1