Prove that: 1 - cos 2Θ is identical to: tanΘsinA

where A is an expression to be found.
what is the value for A

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?