please help me solve this for tomorrows test
- Thread starter ds4257
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For what basic reference angle value is the sine equal to -1? Then to what is 2@ + 40 equal? Then to what is @ equal?
If you get stuck, please reply showing your answers to the above questions. Thank you!
the base reference angle for sin theta = -1 is 270 degrees.
i am supposed to find all solutions of theta, between 0 and 360.
sin (2 theta + 40) = sin 270
sin (2 theta + 40) = sin 270
2 theta = 230
theta = 115
is this the right direction
thanks - so much
i am supposed to find all solutions of theta, between 0 and 360.
sin (2 theta + 40) = sin 270
sin (2 theta + 40) = sin 270
2 theta = 230
theta = 115
is this the right direction
thanks - so much
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- 16,582
Yes, that's the way to go. Now, did the exercise give an interval on which to find solutions, or are you supposed to find all solutions (that is, supposed to find a formula)? Thank you!