Introduction to Trigonometry and Law of Sines and Cosines

find X

• 52
• 33
• 41
• 29

Find AC

• 12
• 10
• 23
• 14

• 6.99
• 6.33
• 13.59
• 7.83

What is the measure of angle A?

• 50 degrees
• 60 degrees
• 78 degrees
• 74 degrees

Find AB

• 10
• 8
• 6.1
• 4.9

Find BC

• 21
• 21.9
• 17
• 42.9

Use the Law of Sines to solve for BC

• 33
• 24
• 12
• 29

Find AB

• 10
• 8
• 6.1
• 4.9

What is the measure of angle A?

• 58 degrees
• 61 degrees
• 78 degrees
• 74 degrees

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