A community for students. Sign up today!
Here's the question you clicked on:
← 55 members online
 0 viewing
 one year ago
Given: a and B are firstquadrant angles, sin a=5/13, and cosB= 3/5. evaluate sin(aB).
a.) 33/65
b.) 33/65
c.) 63/65
 one year ago
Given: a and B are firstquadrant angles, sin a=5/13, and cosB= 3/5. evaluate sin(aB). a.) 33/65 b.) 33/65 c.) 63/65

This Question is Closed

ash2326
 one year ago
Best ResponseYou've already chosen the best response.2Use this here \[\sin (AB)=\sin A\times \cos B\sin B\times \cos A\]

ash2326
 one year ago
Best ResponseYou've already chosen the best response.2sin a=5/13, and cosB= 3/5

aussy123
 one year ago
Best ResponseYou've already chosen the best response.0I tried this but the book is asking me to subtitute pi/2 for a

aussy123
 one year ago
Best ResponseYou've already chosen the best response.0and I know I have to solve for sin B and cos A

ash2326
 one year ago
Best ResponseYou've already chosen the best response.2\[\sin (B)=\cos (\frac {\pi}{2} B)\] \[\cos A=\sin (\frac{\pi}{2}{A})\] you can use \[\sin^2 x+\cos^2 x=1\] to figure out sin B and cos A
Ask your own question
Ask a QuestionFind 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.