Question

if cos a=12/3, sin b=3/5 find sin a+b and cos a-b​

Answer 1

ѕínв=3/5=σpp/hчp.

σpp=3

hчp=5

ѕσ αdjαcєnt ѕhσuld вє 4(вч phчthαgσruѕ thєrσєm)

ѕσ ѕín α=4/5

ѕín α+в= 3/5+4/5

=3+4/5

=7/5

Answer 2

Step-by-step explanation:

find another in this manner