Jo
posted by Jo .
That makes sense but were did you get of 7.9 from. Once I know that I under stand subtracting the period... just don't know were that value came from
h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 2 4 6 6 3 4

sorry

To solve 200 = 300sin(5pi/11)(t4) + 500
we get 2/3 = sin(5pi/11)(t4)
So I know that (5pi/11)(t4) is in either III or IV, since the sine is negative in those quadrants
To find the "angle in standard position" I ignore the negative and take the inverse sine
That got me .72972 (you must have had that)
For the angle in III
(5pi/11)(t4) = pi + .72972
solving this gave me 6.7 (which you had)
For the angle in IV
(5pi/11)(t4) = 2pi  .72972
solving this gave the the 7.9
Respond to this Question
Similar Questions

math, question
Is there anywher i can go for further explanations on how to solve for the following statements on how to solve them: Dividing writing each result in simplest form & adding & subtracting The second sentence makes no sense to me. 
algbra
heyya Your equation makes no sense. Your equation makes no sense. 4x = y > 6 4x = y > 6 does it make since if you put a line under >. Because that is the question I am suppose to figure out. 
maths (it's urgent)
the path of the rocket is represented by the equation y= root under(25x)^2. the path of a missile designed to intrersect the path of the rocket is represented by the equation x = 3/2 root under (y). the value of x at the point of … 
Physics
A bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). It is necessary, therefore, to subtract off this background level from the data to obtain a valid measurement. Suppose … 
RESPONSE to PreCalc
Makes complete sense thank you so much!!! My only question is how come we respect domains only sometimes... For example now sin©¬/cos©¬ = (1/a)/(¡î3/a) = 1/¡î3 tan©¬ = 1/¡î3 ©¬ = 30¨¬ or pi/6 then sin 30¨¬ = 1/a 1/2 … 
Algebra (please help)
Determine whether the following statement makes sense or does not make sense, and explain your reasoning (modified from true/false format of text): If f(x) = 3x, then f^1(x) = 1/3x A) This makes sense because the inverse would divide … 
math
The lengths in inches (x and y) of two fish are related by the equation 5x – 4y = 24. The two ordered pairs that follow are solutions to the equation: (4, 1) (12,9) Which statement best evaluates whether these two solutions make … 
Math
A mathematical model for concentration of administered cortisone in humans over a 24hour period uses the function C= [(D x a) / V(ab)] (e^(bt)e^(at) where C is the concentration, D is the dose given at time t=0, V is the volume … 
English
I can stand that much to help the environment.  What is the part of speech of 'that much' in the sentence? 
Math
I wounder what is 5(29)? I just really don't under stand how to solve it.