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5.1
5.2
5.3
5.4
5.5
100
1/csc u
What is sin u
100
An equation that is true for only some of the values in its domain.
What is a conditional equation.
100
Your preliminary goal in solving a trigonometric equation.
What is isolating the trigonometric function ?
100
The formula for sin u cos v - cos u sin v
What is sin (u-v) ?
100
The formula that can be used to prove sine double angle formula.
What is sine sum formula?
200
1
What is sin squared x + cos squard x
200
An equation that is true for all real values in the domain of the variable.
What is an identity?
200
When you extract square roots make sure you account for both these solutions.
What is positive and negative solutions?
200
The Greek astronomer who was credited with the invention of trigonometry.
What is Hipparchus?
200
The number of ways that cos 2u can be written in.
What is 3?
300
cot (pi/2 - u)
What is tan u
300
While verifying trigonometric identites, it is often better to work with this side of the equation first.
What is the more complicated side?
300
The solutions of 4 sin squared u = 3 in the interval [0,2pi)
What is pi/3 , 2pi/3, 4pi/3, 5pi/3.
300
tan u - tan v is multiplied by the reciprocal of this expression to get tangent difference formula.
What is 1 + tan u tan v
300
The signs of sin u/2 and cos u/2 depend on this variable.
What is the quadrant in which u/2 lies?
400
If sin x = 0 and cos x=1, the value of this function is undefined.
What is cot x?
400
cot u x tan u equals to this value
What is 1?
400
The included angle in the interval as opposed to 2pi.
What is 0?
400
sin (3pi - x) is equal to this expression if the difference formula is applied.
What is sin x?
400
These formulas are often used in calculus.
What is power reducing formulas?
500
sec squared x-1/sin squared x is equal to this value.
What is sec squared x.
500
tan squared y (csc squared y - 1) is equal to this value.
What is 1?
500
Sine of this angle is 1 less than the least prime number.
What is 90 or pi/2?
500
The exact value of cos 15 is equal to this radical expression
What is root 6 + root 2/4 ?
500
It is a good idea to check your answer after using a double angle formula with this.
What is a graphing utility?