Trig Review

Which is the correct ratio for the sine ratio?

Which is the correct ratio for the tangent ratio?

Which is the correct ratio for the cosine ratio?

Which of the following formulas shows the Law of Cosines?

• c² = a² + b² - 4ac + cosA
• c² = a² - b² - 2abcosC
• c² = a² + b² - 2abcosC
• (cos A)/a = (cos B)/b

Identify the Law of Sines

• Soh Cah Toa

What is sin^-1(1/2)?

• 150
• 120
• 60
• 30

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

What method would you use to solve for θ?

• SOH CAH TOA, then cosine law

• Sine law, then cosine law

• Cosine law, then sine law

• Pythagorean Theorem, then sine law

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity