(a) Show that tan? 0 = } if and only if sin? 0 = 1/4. %3D (b) Use part (a) to find all the values of 0, –T

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(a) Show that tan? 0 = if and only if sin? 0 = 1/4.
(b) Use part (a) to find all the values of 0, -n <o< 2n, for which tan? 0 = . Give your
answers in radians.
(c) Verify the following trigonometric identity: cos4t – cos? t = sint – sin? t
Transcribed Image Text:(a) Show that tan? 0 = if and only if sin? 0 = 1/4. (b) Use part (a) to find all the values of 0, -n <o< 2n, for which tan? 0 = . Give your answers in radians. (c) Verify the following trigonometric identity: cos4t – cos? t = sint – sin? t
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