Trigonometry Answers

solve the following

(x+2)/(4) + (3x+1)/(3)

solve the following

8/x^2-4x +2/x

solve the following

7/12ab - 11/15a^2

solve the equation for the interval [0,2pi)

sin2X + sin X = 0

if cos x= (-5/13) and tan x <0, then find sin 2x

find the exact value of the real number y

y=arctan((square root of 3)/3)

solve and write in standard form

1a. 5+(2+3i)+(-3-7i)

1b. (5-10i)-(2+i)

1c. -5i(2-3i)

1d. (2+3i)(-3-7i)

1e. 2+4i/3-i

1f. 3 square root of -50 + square root of -72

1g. (7-square root of -15)^2

1h. -4+square root of -20 / 2

1i. 7 square root of -2 (-4 square root of -3)

solve each polynomial equation by factoring

1. x^6-25x^4=0

2. y^3-3y^2=16y-48

3. x^3+2x^2-9x-18=0

4. x^3+x^2-4x-4=0

5. x^3-7x^2=-5x-35

6. a^4+2a^3+a^2==0

7. 3n^4-4n^2=-1

8. 8x^5+10x^4=4x^3+5x^2

9. 2n^4-9n^2+4=0

10. 8y^4-4y^2=0

solve by factoring

1. x^2-x-20=0

2. x(14x-15)=9

solve by using the Square Root Method

3. 3x^2=75

4. (5x+3)^2=12

solve by completing the Square

5. x^2+14x+13=0

6. 5x^2-12x=-2

solve by using the Quadratic Equation

7. x^2+10x+25=0

8. 5x^2+2x+10=0

9. 3x^2=7x+20

Find the Discriminent

10. x^2-12x+36=0

11. 5x^2=x

12. 2x^2=-x-12

1a) In last night’s basketball game, Sally scored 9 less than twice what Lucy scored. The sum of their scores is 27. How many points did Sally and Lucy make individually?


1b) The heights in inches of three basketball players are 3 consecutive integers. If the sum of twice the 1st, 3 times the 2nd, and the 3rd is 437, what are the three heights.


1c) A rectangular floor has a perimeter of 54 feet. If the length is 3 more than the width, what are the dimensions of the floor?


1d) You are purchasing a CD player at a markdown price of $127.50. If the markdown price was 15% off the original price, how much was the CD player originally?

Solve for the Given Variable:

1) D=RT for T

2) T=D+pm for m