Writing x instead of theta, cos2x = 1 - (12/13)2 = 1 - 144/169 = 25/169 = (5/13)2
So cos(x) = ± 5/13
so that x = cos-1(5/13) or cos-1(-5/13)
And then, depending on the range of x, you have solutions for x. A calculator will only give you the principal solutions, though.
1200/13 = 92.31%
Expressed in its simplest form, 3/4 x 12/13 = 9/13 or nine thirteenths.
Quadratic formula gives roots as 1.53 and 10.47 (to nearest hundredth.)
Without an "equals" word or sign somewhere, there is nothing to solve.You only have an expression, not an equation.
A dozen is twelve, so twelve dozen equals twelve times twelve.
Twelve thirteenths is larger
Twelve squared is a dozen dozen, or one gross. 122 = 12 times 12 = 144
4 squared minus 2 squared equals 12
1200/13 = 92.31%
Expressed in its simplest form, 3/4 x 12/13 = 9/13 or nine thirteenths.
24
one.
96/104 + 91/104 = 187/104 or 1 and 83/104
Twelve. Four squared is sixteen less four is twelve.
12. Twelve squared is 12 x 12, so the depth would be the number of one side, 12.
Quadratic formula gives roots as 1.53 and 10.47 (to nearest hundredth.)
Without an "equals" word or sign somewhere, there is nothing to solve.You only have an expression, not an equation.