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Write in Terms of the Cofunction of a Complementary Angle sin⁡π9\sin \frac { \pi } { 9 }

Question 225

Multiple Choice

Write in terms of the cofunction of a complementary angle.
- sin⁡π9\sin \frac { \pi } { 9 }


A) csc⁡7π18\csc \frac { 7 \pi } { 18 }
B) cos⁡7π18\cos \frac { 7 \pi } { 18 }
C) cos⁡8π9\cos \frac { 8 \pi } { 9 }
D) csc⁡8π9\csc \frac { 8 \pi } { 9 }

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