A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Very easy! Ready? A triangle has side lengths of 34 in, 28 in, and 42 in. is this triangle acute,obtuse, or right?
anonymous
 one year ago
Very easy! Ready? A triangle has side lengths of 34 in, 28 in, and 42 in. is this triangle acute,obtuse, or right?

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What do you think the answer is?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I already have the answer. It would ruin it.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438054391038:dw think obtuse

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1Wouldn't you use the law of cosines to get one angle, then use the law of sines?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so your answer is obtuse.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0yes because one angle is more than 90 but I don't see a triangle with those measurements

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1I know the answer  it is acute

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0can you really make a triangle with those measurements?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Why would it be acute wolf?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1I used an online triangle calculator Still, I'm sure your instructor would want it worked out right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The answer is acute.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1Okay  they just don't want people to give out answers directly. Do you want it worked out?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0can you get a triangle with those measurements?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1Let's use the Law of Cosines cos (A) = (b^2 + c^2 a^2) / (2*b*c) cos (A) = (34^2 + 42^2 28^2) / (2*34*42) cos (A) = 2,136 / 2,856 cos (A) = 0.7478991597 Angle A = 41.591 Degrees For the second angle, let's use the Law of Sines sin (B) = (b • sin(A)) / a sin (B) = (34 * sin (41.591))/a sin (B) = (34 * 0.66381)/28 sin (B) = 0.806055 Angle B = 53.712 Angle C = 180 41.591 53.712 Angle C = 84.697 All 3 angles are less than 90 degrees and therefore it is a right triangle.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0@wolf1728 thank you error on the last line not right triangle acute triangle I was told to always find the largest angle first seems like it does not really matter My concern was the lengths isn't there some rule about the possible lengths of the 3rd side given 2 lengths? but my 2 mistakes 1) since the factor would make the requirement 35 and we only had 34 should know acute 2) name the triangle by the angles since one angle was obtuse the triangle obtuse

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1Geez, I did all that work and TYPED the wrong answer!! All angle less than 90 degrees so it is an ACUTE triangle.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.