Show:
Trigonometric Formulas
Sum and Difference
Double Angle
Trigonometric Equations
The Unit Circle
100
The reciprocal identity for Cos x
What is 1 / sec x
100
Exact value for Sin25Cos5+Cos25Sin5
What is 1/2
100
Find the exact value of 2Sin15Cos15
What is 1/2
100
Find all solutions for x in radians: Cos x = -1/2
What is 2pi/3 +2npi and 4pi/3 +2npi
100
The Exact Value of Sin 0
What is 0
200
The reciprocal identity for Tan x
What is 1/ Cotx
200
Exact Value for Tan50 - Tan20 / 1+tan50Tan20
What is 1 / square root 3
200
Find the exact value of Sin 2x if Cosx = 24/25, x lies in quadrant 4.
What is -336/625
200
Find all solutions in radians: 4sinx - 1= 2sinx
What is pi/6 + 2npi and 5pi/6 + 2npi
200
The exact value of Cos pi/6
What is square root 3 / 2
300
The identity that is = to 1
What is Sin squared + Cos squared
300
Sin (45- 30)
What is square root 6 - square root 2 / 4
300
Find the exact value of Cos 2x, if Cot x =2 and x lies in Quadrant 3.
What is 3/5
300
Solve each equation on the interval of [0,2pi). Sin 2x = square root 3/ 2
What is pi/6, pi/3, 7pi/6, 4pi/3.
300
The exact value of Tan 5pi/3
What is - square root 3.
400
Cos (x +y)
What is CosxCosy - SinxSiny
400
Exact value for Sin 105
What is square root 6 + square root 2 / 4
400
Find the exact value of Sin 2x if Sinx = -9/41 and x lies in Quadrant 3.
What is 720/1681
400
Solve the equation on the interval of [0,2pi) 2 sin squared x - sin x - 1=0
What is pi/2, 7pi/6, 11pi/6
400
The exact value of CSC 7pi/6
What is - 2.
500
Sin 2x
What is 2SinxCosx
500
Exact value of Cos (x + y) if Sin x = 3/5 and lies in quadrant 1 and Sin y = 5/13 and lies in quadrant 2.
What is -63/65
500
Find the exact value of Tan 2x if Sinx = 5/13 and lies in quadrant 2.
What is -120/119
500
Solve on the interval of [0,2pi). 2 sin squared x = sinx + 3.
What is 3pi/2
500
The exact value of Cot 2pi/ 3
What is - 1 / square root 3.