Suppose a sales can be modelled by the equation; S=200+200cos[pi/6(t+2)] where t is time in months with t=0 corresponding to January for what month are sales...

Suppose a sales can be modelled by the equation; S=200+200cos[pi/6(t+2)] where t is time in months with t=0 corresponding to January for what month are sales...

sin(0)=(√0)/2 sin(π/6)=(√1)/2 sin(π/4)=(√2)/2 sin(π/3)=(√3)/2 sin(π/2)=(√4)/2 cos(0)=(√4)/2 cos(π/6)=(√3)/2 cos(π/4)=(√2)/2 cos(π/3)=(√1)/2 cos(π/2)=(√0)/2 Why...

I was messing with a calculator and found that the square root of 0.5 is equal to the sine and cosine of 45. I was just wondering the correlation between the two equations.

csc t = 3 and the terminal point of t is in Quadrant II.

If sin(x) = 1/8 and x is in quadrant I, find the exact values of the expressions without solving for x. a) sin(2x) b) cos(2x) c) tan(2x)

Hello, I am having trouble with the following problem: If A and B are both acute angles and sin(A)=6/13 and cos(B)=48/49 find the value of cos9-A)-sin(-B). Write the answer as a simplified...

If the graph of y = sin(x) is shifted __?____ units left, the graph of y = cos(x) is obtained.

Please help me answer the following question! I'm stuck! Prove that cos6ß + sin6ß = 1/4 + 3/4cos2ß I've tried simplifying out the LHS into (cos2ß)3 + (sin2ß)3,...

If angle w is in quadrant III and cos w =a, what is cos(w+pi)?

trigonometry

Consider the equation cos(3.14t)=-0.7. Find the smallest positive solution in radians and round your answer to 4 decimal places Consider the equation tan(3.25t)-6.6. Find the smallest...

As well as this one below. I'm just having trouble understanding the process and steps. Find all the solutions in [0,2pi) sin^2(t)-cos^2(t)=0 3. Solve...

1. Find the exact value of cos(t/2) if sin(t) = -7/25 and pi < t < 3pi/2 2. Find all the solutions in the interval [0,360] cos(2x)= - sqr...

I'm having trouble solving the above question, as well as the one below tan20+tan10/1-tan20tan10=

The sine and cosine functions are used to model periodic behavior. find an internet resource that discusses the periodic behavior.

sin((pi)/(6))cos((pi)/(3)) - sin((pi)/(3))cos((PI)/(6))

Find the missing angle below for 0°≤Ø≤90° cos Ø = 1/2

The area of the region enclosed by the graph of the polar curve r=1/sin θ+ cos θ and the x and y axes is A) 0.48 B) 0.50 C) 0.52 D) 0.98 E) 1.00

What's the value of x if pi≤x≤3pi/2 and sin x=5 cos x?

(CosA-cosB)2 + (sinA-sinB)2 Can someone help me solve this? and what steps do we take ?

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