New SAT Math - Calculator : Sine, Cosine, & Tangent

Study concepts, example questions & explanations for New SAT Math - Calculator

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Example Questions

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Example Question #1 : Sin, Cos, Tan

Round to the nearest hundredth. 

Use your calculator to find:

Possible Answers:

None of the above

Correct answer:

Explanation:

Before plugging the function into the calculator make sure the mode of the calculator is set to radians,

plug in 

 

which is equal to .

Example Question #11 : Sine, Cosine, & Tangent

What is the value of cos30o . sin30o . tan60o

Possible Answers:

Correct answer:

Explanation:

Solution

Example Question #11 : Sin, Cos, Tan

 What is the closest value to this expression?

Possible Answers:

Correct answer:

Explanation:

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 #11 : Sin, Cos, Tan

if   What is ?

Possible Answers:

Correct answer:

Explanation:

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.

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