If Sin A+ Sin B = x and cos A+cos B = y prove that tan (a-b/2)
= +-√ 4x² - y2/
x² + y2 and ta...
Social Studies, 09.05.2021 14:00 Baseball4744
If Sin A+ Sin B = x and cos A+cos B = y prove that tan (a-b/2)
= +-√ 4x² - y2/
x² + y2 and tan (a+b/2) =
Y
2
Answers: 3
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