Question

if A=45 and B=30 then verify
cos(a+b)= cosA cos B - sinA sinB​

Answer 1

Answer:

10.25 is ur answer for this question

Answer 2

Answer:

I hope dis answer will help u

Step-by-step explanation:

cos (a+b)=cos 45.cos 30 -sin 45.sin 30

=1/√2.√3/2-1/√2.1/2

=√3/2√2-1/2√2

=√3-1/2√2