Hello Everyone,
Im having some trouble with phasors.
My objective is to convert expressions such as:
- 8 sin(10t rad+70 degrees) and
120 sin (10t rad -50 degrees)
-60cos (30t rad +10 degrees)
to an expression with cosine and the positive amplitude. I cannot seem to get them correct! either i add 90 degrees when im supposed to subtract or subtract when adding is required.
Can some one please help me, my text does a very brief job of explaining this, and rightfully so since i should know this already!
Please help.
Regards.
Im having some trouble with phasors.
My objective is to convert expressions such as:
- 8 sin(10t rad+70 degrees) and
120 sin (10t rad -50 degrees)
-60cos (30t rad +10 degrees)
to an expression with cosine and the positive amplitude. I cannot seem to get them correct! either i add 90 degrees when im supposed to subtract or subtract when adding is required.
Can some one please help me, my text does a very brief job of explaining this, and rightfully so since i should know this already!
Please help.
Regards.