It is a trigonometric equation.
There isn't a sec key on the TI-83 Plus. Secant is 1/cosine, which is what is used to find secant on a TI-83 Plus. For example, to find the secant of 4, enter 1/sec(4).
Yes, it is.
It also equals 13 12.
This is the same as secant squared theta [sec²(Θ)].Take the identity sin²(Θ) + cos²(Θ) = 1Divide both sides by cos²(Θ):sin²(Θ) / cos²(Θ) = tan²(Θ)cos²(Θ) / cos²(Θ) = 11 / cos²(Θ) = sec²(Θ)tan²(Θ) + 1 = sec²(Θ)
It depends if 1 plus tan theta is divided or multiplied by 1 minus tan theta.
Until an "equals" sign shows up somewhere in the expression, there's nothing to prove.
cosecant(x) = 1/sin(x) = -1sin(x) = -1x = 270 degrees(plus or minus any whole multiple of 360 degrees)
Using x instead of theta, cos2x/cosec2x + cos4x = cos2x*sin2x + cos4x = cos2x*(sin2x + cos2x) = cos2x*1 = cos2x
2 sin (Θ) + 1 = 0sin (Θ) = -1/2Θ = 210°Θ = 330°
copy this and paste in your browsers address window http://www.wolframalpha.com/input/?i=tan+theta+%2B+sec+theta+%3D1
tan2(theta) + 5*tan(theta) = 0 => tan(theta)*[tan(theta) + 5] = 0=> tan(theta) = 0 or tan(theta) = -5If tan(theta) = 0 then tan(theta) + cot(theta) is not defined.If tan(theta) = -5 then tan(theta) + cot(theta) = -5 - 1/5 = -5.2
Press Window and scroll down to Xres. Change it to 2. Then press GRAPH. If the asymptotes still do not appear, increase the Xres number by one until they do. (It cannot go higher than eight.)