trig

-sinx-cosx = 0 x=? please and thank you! i'd appreciate it!

study of sunspots. spots in a year min. is 10, max is 110. between max's of 1750 & 1948, 18 cycles occurred. Find a sinusoidal equation to model this. My equation looks something like this so far: y=50sin(2pi/11(x-d))+60 so How do I get the phase shift? d...

If Shella has a pulse rate of 73 beats per minute and a blood pressure of 121 over 85 and this can be modeled by a sinusoidal function, find this equation. Could you explain to me how to do this step please by showing me the steps? Thanks

Give the exact intersection point for the equations f(x)=4sin^2x+7sinx+6 and g(x)=2cos^2x-4sinx+11 Ok, my result is that there is no intersection point because if you put f(x)=g(x) and try to solve for x or the intersection point, the LS f(x) is not possi...

ok I'm trying to solve for an angle knowing adjacent and opposite of a triangle so I do tangent by definition tan theta = a^-1 o how do I algebraically solve for theta

h t t p : / / i m g 4 0 . i m a g e s h a c k . u s / c o n t e n t . p h p ? p a g e = d o n e& l = i m g 4 0 / 1 4 8 / a s d a s d y e . j p g & v i a = m u p l o a d (def of tan theta = a^-1 o)a = o opposite = adjacent tan theta written with respect to...

Solve tan2A - 2tanA = -1 for 0º≤A≤360º.

simplify the expression. cot^2(x)-csc^2(-x)

simplify the expression. (sin^2x+cos^2x) - (csc^2x-cot^2x)

rewrite each equation in polar form. solve for r if possible a. 2x+3y=5 b. y=1/2x

How did you get 1750-d=11/4?

I mean, so would d = 1747.25 ie y=50sin(2pi/11(x-1747.25))+60