A community for students.
Here's the question you clicked on:
 0 viewing
Life
 2 years ago
In triangle ABC, measure of angle A=33, a=12,b=15, what is the measure of angle b to the nearest degree?
Life
 2 years ago
In triangle ABC, measure of angle A=33, a=12,b=15, what is the measure of angle b to the nearest degree?

This Question is Closed

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Are you given a diagram? You should be able to use sin, cos, or tan to find angle B, since you know two sides (a and b).

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1If so, use a rule like \(\tan B = \frac{15}{12}\), though it might be different depending on your diagram.

Life
 2 years ago
Best ResponseYou've already chosen the best response.0my diagram looks exactly like yours

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Perfect! You can solve for B using \(\tan^{1} (\frac{15}{12})\) then.

Life
 2 years ago
Best ResponseYou've already chosen the best response.0i got a long decimal, although the choices im giveb are all whole numbers

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Okay, wait... If the triangle was a rightangle triangle, you could have solved for B by simply subtracting 9033. So I imagine that's not the case. It's not a rightangle triangle, I'm guessing.

Life
 2 years ago
Best ResponseYou've already chosen the best response.0wait, dont i use the law of sine?

Life
 2 years ago
Best ResponseYou've already chosen the best response.0idk man do you know why i keep getting the decimal, all im doing is putting in the inverse of tan(15/12) into my calculator

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1No, forget I said that. That was for a rightangle triangle. Like you said, you need to use the law of sines. \(\Large\frac{a}{\sin A} = \frac{b}{\sin B}\) \(\Large\frac{12}{\sin 33} = \frac{15}{\sin B}\)

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1\[\sin B = \frac{15 \sin 33}{12}\]

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Is 43 one of the possible answers?

Life
 2 years ago
Best ResponseYou've already chosen the best response.0yea, so i dont find the inverse?

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Yes, you do. We got: \[\sin B = \frac{15 \sin 33}{12}\] so... \[B = \sin^{1} (\frac{15 \sin 33}{12})\]

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1No problem. Have a good night. :)
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.