abdiel345 abdiel345
  • 13-07-2017
  • Mathematics
contestada

Suppose an isosceles triangle ABC has A = 45° and b = c = 4. What is the length of a2?

Respuesta :

irspow
irspow irspow
  • 13-07-2017
You can use the Law of Cosines (a^2=b^2+c^2-2bc cosA)

a^2=4^2+4^2-2*4*4*cos45°

a^2=32-32cos45°

a^2=32(1-cos45°)

a=√(32(1-cos45°))

a≈3.06 units (to nearest hundredth of a unit)
Answer Link

Otras preguntas

the ability of whirligig beetles to gradually release a foul-tasting substance most likely results from
Your grandmother called her congressperson because she is having trouble getting her social security check. this is called ________.
How do I know whether to shrink or enlarge the triangle?
-y/2 ≤ 3 Y≤6 Y≤-6 Y≥-6 Y≥6
Ron has 20 apples. He used 2/5 of the apples to make pies. How many apples did Ron use for pies
rotate flags 90° counter-clockwise
The answers to problems #5-#8 Because I'm confused
when the u.s census is completed each state is notified how it population affects its number of congressional districts this process is called
_____ and periodontal disease occur when plaque is not adequately removed from the surface of the tooth. Laryngitis Arthritis Halitosis
Who knows coding questions? Please help! Thanks.