Shakil H.
asked • 12/25/18sinA.sinB-cosA.cosB=0 proved that tanA+tanB=0
sinA.sinB-cosA.cosB=0 proved that tanA+tanB=0
More
1 Expert Answer
tan (A+B) = (tan A + tan B)/(1-tan A tan B)
tan A + tan B = tan (A+B) (1 - tan A tan B)
Divide the hypothesis equation by cos A cos B to get
tan A tan B -1 = 0
Therefore tan A + tan B = 0
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
Mark M.
Do you mean: (sin A)(sin B) - (cos A)(cos B)?12/25/18