TI-84 Plus CE Trigonometry Functions Quiz

What is the first step in calculating the area of a triangle using the sine function on a calculator?

• Multiply the base and height

• Find the square root of the product of the sides

• Use the cosine function

• Calculate one-half of the product of two sides and the sine of the included angle

When using the Law of Sines, what is the purpose of cross-multiplying?

• To convert degrees to radians

• To simplify the equation

• To solve for an unknown angle or side

• To find the hypotenuse

How do you find an angle using the inverse sine function on a calculator?

• Multiply by 180

• Press the second button followed by the sine button

• Use the cosine function instead

• Press the sine button twice

In the Law of Cosines, what is the first step when solving for a side length?

• Subtract the product of the sides and cosine of the angle

• Add the squares of the other two sides

• Divide by the cosine of the angle

• Multiply the sides by the sine of the angle

What is the purpose of using parentheses when entering expressions in a calculator?

• To ensure the correct order of operations

• To increase the precision of the calculation

• To make the expression look neat

• To convert the expression to radians

In a mixed example using both the Law of Sines and Cosines, why might you need to use inverse trigonometric functions?

• To simplify the equation

• To find an unknown angle

• To convert angles to radians

• To find the length of a side

What is the significance of using the square root function in the Law of Cosines?

• To convert degrees to radians

• To find the hypotenuse

• To solve for an angle

• To determine the length of a side

When solving for an angle using the Law of Cosines, why is it important to distinguish between subtraction and negative signs?

• To simplify the equation

• To ensure the angle is acute

• To convert the angle to radians

• To avoid calculation errors

How do you find an angle using the inverse cosine function on a calculator?

• Press the second button followed by the cosine button

• Use the sine function instead

• Press the cosine button twice

• Multiply by 180

What is the final step in solving for an angle using the Law of Cosines?

• Add the squares of the sides

• Multiply by the sine of the angle

• Divide by the cosine of the angle

• Use the inverse cosine function