7. Non-Right Triangles
Law of Cosines
2: minutes
Problem 5b
Textbook Question
Textbook QuestionIn Exercises 5–8, each expression is the right side of the formula for cos (α - β) with particular values for α and β. b. Write the expression as the cosine of an angle. cos 50° cos 20° + sin 50° sin 20°
Verified Solution
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
154
views
Was this helpful?
Related Videos
Related Practice
Showing 1 of 8 videos