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tan(x/2)
23.80;1.70
(2*tan(x))/((cos(x))^2)
(tan(x))^2
3*e^(3*x+1)
| 22x-17=8+12x | | 2(3x-1)=4x*5 | | -9-(5+2X)=-19-X | | 9-(-1+2X)=16-X | | 9-(5+2X)=-19-X | | 3p-12=7p+4 | | 3(4+3X)=60+3X | | 35-6x=-2x+14 | | 4(-1+2X)=-32+4X | | 14n=254 | | 6y-5=15y+13 | | 5(8-6X)=100-15X | | -3y-14=-8 | | (d-1750)/70=t | | v^2-8v+25=y | | p-0.9(40)=26 | | x+17=79 | | p-0.9(30)=26 | | 3000=125x | | 300=125x | | 5+4x-12=3x+7 | | 2x^2+7x-14=4x-5 | | xlog(2)=27 | | x=876-8y | | 5/12/2/9 | | 5x^2-10=8 | | 15=1.3x | | -5/4=k-3/2 | | -9x^2-32y=-16y^2+128 | | -9x^2-32y=-16y^2 | | 0=-5x^2+40x+3 | | log(3)x=12.3 |