1.

F tan A = 1 and tan B = 13 ; evaluate :cos A cos B - sin A sin B​

Answer» ONG>Answer:

Answer:

The value of

SOLUTION:

Given that the value of,

We KNOW that,

Thus the angle,

Similarly, it is given that,

We know that,

Thus the angle,

We know that the value of

Thus the TERM is simplified to,

Thus, the value of  is given by 183/707


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