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Earn +20 ptsQ: What is formula for cos3x?
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What is the period of sin3x plus cos3x?
The period of sin + cos is 2*pi radians (360 degrees) so the period of sin(3x) + cos(3x) is 2*pi/3 radians.
Sin2x equals cos3x find x?
0. sin 2x = cos 3x 1. sin 2x = sin (pi/2 - 3x) [because cos u = sin (pi/2 - u)] 2. [...]
Cos x - cos x sin2 x equals cos3x?
cos(x)-cos(x)sin2(x)=[cos(x)][1-sin2(x)]cos(x)-cos(x)sin2(x)=[cos(x)][cos2(x)]cos(x)-cos(x)sin2(x)=cos3(x)
What is a definition of a formula in ict?
a formula is a formula <3 simples!
How do you solve the limit 1-cos3x divided sin squred2 7x approches 0?
This is a perfect time to use l'Hospital's rule: If a fraction becomes 0/0 at the limit (like this one does), then the limit of the fraction is equal to the limit of (derivative of the numerator)/(derivative of the denominator) . I'm not sure why l'Hospital's rule stuck with me all these years. But when it's appropriate, like for this one, you can't beat it.
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