Exploring Right Triangle Trigonometry Concepts

The video tutorial covers right triangle trigonometry, focusing on special triangles like 30-60-90 and 45-45-90. It explains trigonometric ratios such as sine, cosine, and tangent, and how they relate to triangle sides. The tutorial also introduces the SOHCAHTOA mnemonic for memorizing these ratios and demonstrates how calculators can assist in solving trigonometric problems. Practice problems are provided to reinforce understanding.

What is the sum of the interior angles of any triangle?

• 360 degrees

• 270 degrees

• 90 degrees

• 180 degrees

Tags

TEKS.MATH.7.11C

In a 45-45-90 triangle, if one leg is 7, what is the length of the hypotenuse?

• 49

• 7√3

• 14

• 7√2

Tags

TEKS.MATH.8.7D

What is the cosine of 60 degrees in a 30-60-90 triangle?

• 1/2

• √2/2

• √3/2

• 2

Tags

TEKS.MATH.G.9A

What is the sine of 30 degrees in a 30-60-90 triangle?

• √2/2

• √3/2

• 2

• 1/2

Tags

TEKS.MATH.G.9A

In a 45-45-90 triangle, what is the tangent of 45 degrees?

• √3

• √2

• 0

• 1

Tags

TEKS.MATH.G.9A

What does 'SOH' in SOHCAHTOA stand for?

• Sine = Opposite/Hypotenuse

• Sine = Opposite/Adjacent

• Sine = Adjacent/Hypotenuse

• Sine = Hypotenuse/Opposite

Tags

TEKS.MATH.G.9A

What does 'CAH' in SOHCAHTOA represent?

• Cosine = Hypotenuse/Adjacent

• Cosine = Adjacent/Opposite

• Cosine = Opposite/Hypotenuse

• Cosine = Adjacent/Hypotenuse

Tags

TEKS.MATH.G.9A

How do you find the tangent of an angle in a right triangle?

• Opposite/Adjacent

• Adjacent/Hypotenuse

• Adjacent/Opposite

• Opposite/Hypotenuse

Tags

TEKS.MATH.G.9A

If the hypotenuse in a right triangle is 11 and one angle is 52 degrees, how can you find the other sides?

• Cannot be determined

• Using the Pythagorean theorem alone

• By estimating

• Using trigonometric ratios and a calculator

Tags

TEKS.MATH.G.9A

TEKS.MATH.G.9B

What is the sine of a 38-degree angle in a right triangle with opposite side 25 and hypotenuse labeled X?

• X/25

• 38/X

• 25/38

• 25/X

Tags

TEKS.MATH.G.9A