hamood9654 hamood9654
  • 04-07-2017
  • Mathematics
contestada


If cos(t)=-9/10 where pi < t < 3pi/2, find the values of the following trigonometric functions.

cos(2t)=
sin(2t)=
sin(t/2)=
cos(t/2)=

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ghanami
ghanami ghanami
  • 09-07-2017
hello here is a solution : 
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