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Example Questions
Example Question #1 : Evaluating Trig Functions
Find the value of to the nearest tenth if
and
.
Rewrite in terms of sine and cosine.
Substitute the known values and evaluate.
The answer to the nearest tenth is .
Example Question #1 : Find The Decimal Value Of A Trigonometric Function
Determine the value of in decimal form.
Ensure the calculator is in radian mode since the expression shows the angle in terms of . Also convert cotangent to tangent.
Example Question #1 : Find The Decimal Value Of A Trigonometric Function
Find the decimal value of
To determine the decimal value of the following trig function, , make sure that the calculator is in radian mode.
Compute the expression.
Example Question #1 : Find The Decimal Value Of A Trigonometric Function
Determine the correct value of
.
The question asks for the y-coordinate on the unit circle when the degree angle is
.
Be careful not to confuse finding the value of the angle when the y-value of the coordinate of the unit circle is .
Ensure that the calculator is in degree mode.
Example Question #1 : Find The Decimal Value Of A Trigonometric Function
Find the value of
.
Before beginning this problem on a calculator, though this is not necessary since these are special angles, ensure that the mode of the calculator is in degrees.
Input the values of the expression and solve.
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