Question

1. Without expanding evaluate

|sinA cosA. sin( A+B)|
|sinB cos B sin(B+C)|
|sinC cosC. sin(C+ A)|​

Answer 1

Answer:

Step-by-step explanation:

Let, x=1.3  

23

.

Then, 10x=13.  

23

(1)

                =13.23  

23

 

and 1000x=1323.  

23

(2)

Now, subtracting  (1) from (2) we get,

990x=1310

⇒x=  

990

1310

​

=  

99

131

​

 

Which is the required  

q

p

​

form