Expand 3cos(12a) using a double angle identity in terms of sine...

Consider the function f(x)=3cosx−cos^(3)x for 0<x<2π. For the following questions, write inf fo...

What value for function y=3cos(t-pi) + 2 gives an instantaneous rate of change of 0? a) 0 b) pi/...

3+siny = 3cos^2 y for 0<Y<360

solve 3cos^2 2x +4 sin 2x =1 0<x<360

y = 3cos(3x)cos(10x) This function represents the displacement-time of a guitar string as it vibr...

f(x) = 3cos(x)−cos^3(x) for 0 < x < 2π I need help finding where it increases and decreases and...

For the function f(x)=3cos(2x),what is the first point where it is increasing the fastest? Also pl...

Expand cos(50°) using a double angle identity

How does √(-3cos(t)/2)^2 +(3sin(t)/2)^2 (3cos(t)/2 - 9/2)^2 equal 3/4√4sin^2(t)-12cos(t)+17 instead...

how do you expand double brackets?

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