All Trigonometry Resources
Example Questions
Example Question #11 : Sin, Cos, Tan
What is the value of cos30o . sin30o . tan60o
Example Question #12 : Trigonometric Operations
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 #12 : Sin, Cos, Tan
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 #2 : Trigonometry
If cos x = 0.2 and sin x = 0.4, what is the value of tan x?
2
0.035
10
1
4
2
Example Question #12 : Sin, Cos, Tan
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
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