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Example Questions
Example Question #11 : Trigonometry
What is the value of cos30o . sin30o . tan60o
Example Question #12 : Trigonometry
What is the closest value to this expression?
First you have to know the equation for and apply it to our equation. Second the formula of
will allow you to get rid of the square sin and cos. Third the equation
will allow you to get rid of the
. Therefore, we will have a
, and that will be equal to
. Sum
and
and you will get
Example Question #13 : Trigonometry
if What is
?
Remember two things. First if , find the
by using the Pythagoras Theorem. If one side is
and the hypotenuse is
, then the other side is
.
will be
. Finally remember the formula for
. And just place the things we found to the equation.
Example Question #1 : Trigonometry
If cos x = 0.2 and sin x = 0.4, what is the value of tan x?
1
2
4
10
0.035
2
Example Question #11 : Trigonometric Operations
Which of the following describes the ratio of sine?
Sine is by definition of sides in a right triangle is opposite side over hypotenuse.
To remember this, use SOH CAH TOA.
SOH: Sine=Opposite/Hypotenuse
CAH: Cosine=Adjacent/Hypotenuse
TOA: Tangent=Opposite/Adjacent
Example Question #1 : Sec, Csc, Ctan
Find the value of the trigonometric function in fraction form for triangle .
What is the secant of ?
The value of the secant of an angle is the value of the hypotenuse over the adjacent.
Therefore:
Example Question #2 : Sec, Csc, Ctan
Which of the following is the equivalent to ?
Since :
Example Question #12 : Trigonometric Operations
For the above triangle, what is if
,
and
?
Secant is the reciprocal of cosine.
It's formula is:
Substituting the values from the problem we get,
Example Question #13 : Trigonometric Operations
For the above triangle, what is if
,
and
?
Cotangent is the reciprocal of tangent.
It's formula is:
Substituting the values from the problem we get,
Example Question #2 : Sec, Csc, Ctan
Determine the value of .
Rewrite in terms of sine and cosine.
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