## anonymous 3 years ago Complete the identity..

1. anonymous

2. anonymous

so sin(a+b) = sinacosb + cosbsina can you do it now ?

3. anonymous

what is the value of that b sign ?

4. anonymous

a - alpha , b - beta

5. anonymous

its not on my calc .. confused by that one

6. anonymous

$\sin(\alpha\ + \beta\ )= \sin(\alpha\ )\cos(\beta\ ) + \sin(\beta\ )\cos(\alpha\ )$

7. anonymous

this is an identity.. can you solve your problem using this now ?

8. anonymous

tan α + tan β .... or do i have those reverse ?

9. anonymous

correct