Reduce terms: (sin x + sin 3x)/(cos x - cos 3x) =cos(2x)/sin (2x)
(sin x + sin 3x)/(cos x - cos 3x) = cot (2x)
The last line proves the identity (sin x + sin 3x)/(cos x - cos 3x) = cot (2x)
Answer:
Any of the above
Step-by-step explanation:
Any one of the given parameters defines the size of the circle, so any or all of them will have the same value for congruent circles.
Answer:
-7
Step-by-step explanation:
20 - 3 (-5 + 2)^2
20 - 3 (-3)^2
20 - 3(9)
20 - 27
-7
Answer:
the 3 one is 4+5=9876
Step-by-step explanation: