Question

15. If
Cos (A+B) = 1, Tan B = 1
Sin A.
then find.​

Answer 1

Step-by-step explanation:

tan B=1

tan B= tan45

B=45

now cos(A+B)=1

cos(A+45)=1

we know cos0=1

so

A=-45

sin(-45)=-sin45

= -1/√2

Answer 2

Answer:

.017

Step-by-step explanation:you use the calculator and type it in just how you said it to get the answer of .017