Introduction to Trigonometry Functions in Right-Angle Triangles

The video introduces trigonometry, focusing on right angle triangles and the three main trigonometric functions: sine, cosine, and tangent. It explains how to identify the hypotenuse, opposite, and adjacent sides based on the angle's position. The sine function is used with the opposite and hypotenuse, the cosine function with the adjacent and hypotenuse, and the tangent function with the opposite and adjacent. The video also covers using inverse functions to find angles and emphasizes memorizing trigonometric tables.

In a right-angle triangle, which side is opposite the right angle?

• Hypotenuse

• Opposite

• Adjacent

• Theta

What is the sine of an angle equal to in a right-angle triangle?

• Adjacent divided by Hypotenuse

• Opposite divided by Adjacent

• Hypotenuse divided by Opposite

• Opposite divided by Hypotenuse

Which function would you use to find an angle if you know the opposite and hypotenuse?

• Inverse Tangent

• Sine

• Tangent

• Cosine

What is the cosine of an angle equal to in a right-angle triangle?

• Opposite divided by Hypotenuse

• Hypotenuse divided by Adjacent

• Opposite divided by Adjacent

• Adjacent divided by Hypotenuse

If you know the adjacent and opposite sides, which trigonometric function would you use?

• Sine

• Cosine

• Tangent

• Inverse Sine