Basic trigo | Mathematics | Page 1

slender badger Sep 3, 2024, 11:37 AM

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In the anwerkey the anwer is given 24/25 but im getting 2/root(5)
Q. If tan (a+b) = 3/4 and tan (a-b) = 1/2, where A + B < 90 and A > B > 0, find the value of Sin(2A)
is my answer right ? if not then how to get the 24/25 answer

amber badgerBOT Sep 3, 2024, 11:37 AM

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slender badger Sep 3, 2024, 11:38 AM

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is my answer right ? if not then how to get the 24/25 answer

ripe orchid Sep 3, 2024, 11:44 AM

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wait lemme solve it

slender badger Sep 3, 2024, 11:45 AM

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ripe orchid wait lemme solve it

alr but can you atleast check my answer from the above pic

ripe orchid Sep 3, 2024, 11:50 AM

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im getting the same answer

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ill try again

slender badger Sep 3, 2024, 11:50 AM

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ripe orchid ill try again

ah i think it is the right answer

vale stump Sep 3, 2024, 11:50 AM

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looks like an error in answer key
you do get 24/25 if both tan(a+b) and tan(a-b) are 3/4 though

ripe orchid Sep 3, 2024, 11:50 AM

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the book might be wrong

slender badger Sep 3, 2024, 11:51 AM

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ripe orchid the book might be wrong

yes could be

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alr then ig my doubt is solve i will close this forum

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.close

#Basic trigo