SOLUTION: Find the exact value of tan (a-b) if sin a= 4/5 and cos b = 5/13 Firecrazed13@yahoo.com

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Question 1040805: Find the exact value of tan (a-b) if sin a= 4/5 and cos b = 5/13
Firecrazed13@yahoo.com
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!












Similarly, you can show that

Therefore



Similarly,



Tangent of the difference formula:



Case 1:



Just do the arithmetic. Then plug in the numbers and do the arithmetic for the other three cases.

John

My calculator said it, I believe it, that settles it