goal 4 review (law of sines and cosines)

when do you use law of sines or law of cosines?

• for right triangles

• for non-right triangles

• for rectangles

how do you know to use law of sines?

• when you know an angle and the side across from it

• when you know one angle

• when you know 2 sides

how do you get the "magic number" for the law of sines?

• you change your mode to radians

• you divide the fraction that has numbers in top and bottom

• you use inverse sin

when should you use law of cosines?

• when you don't know an angle and the side across from it

• when there's a right angle

• when you know all of the angles

which method should you use to solve this triangle?

• law of sines

• law of cosines

• sohcahtoa

which method should you use to solve this triangle?

• law of sines

• law of cosines

• sohcahtoa

which method should you use to solve this triangle?

• law of sines

• law of cosines

• sohcahtoa

what is the "magic number" for this problem?

• .0383

• .0363

• 2.2