How do you solve sin(theta)= -9/sqrt(97)?

1 Answer
Mar 27, 2017

246^@14 + k180^@
293^@96 + k180^@

Explanation:

sin t = - 9/sqrt97 = - 0.914
Calculator gives -->
t = - 66^@14, or t = 293^@96 (co-terminal)
Unit circle gives another arc t that has the same sin value (- 0.914):
t = 180 - (66.14) = 246^@14
General answers:
246.14 + k180^@
293^@96 + k180^@