A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
pls help urgent help needed
anonymous
 3 years ago
pls help urgent help needed

This Question is Closed

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1for Q.a use the identity : cosAcosB + sinAsinB = cos(AB)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i got 24 which is right

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1for Q.b use the identity : sinAcosB  cosAsinB = sin(AB), multiply by 1 to both sides, giving us cosAsinB  sinAcosB =  sin(AB)

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1in this case, given A = 17 and B = 7

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0for b will the answer be 10

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1hmmm.... cosAsinB  sinAcosB =  sin(AB) put A= 17 and B=7 cos17sin7  sin17cos7 =  sin(177) cos17sin7  sin17cos7 =  sin10 then use the identity : sinx = sin(x) so, we get sin10 = sin(10) you were right :)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0and how do we do part 3 i got the wrong answer for it just have once chance left on it

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1do like Q.b for Q.c i think u can solve this, now :)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0@RadEn i got the wrong answer again for part 3

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1hmmm.. cos3sin(2)  cos2sin3 = cos3sin2  cos2sin3 =  {cos3sin2 + cos2sin3} we have to use the identity cosAsinB + cosBsinA = sin(A+B) so,  {cos3sin2 + cos2sin3} =  sin(3+2) = sin5 again, use the identity sinx =sinx now we have sin5 = sin(5)
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.