PLEASE HELP THIS IS MY SEMSTER FINAL Prove the trigonometric identity.

cscxcosxtanx+cotx=cos2x

Drag an expression to each box to correctly complete the proof.

What expression is equivalent to (2x-1)(x-3)?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle