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secondary 4 | A Maths
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How to prove this identity? Thanks!
Date Posted: 3 years ago
Views: 558
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Thank you so much! I got it~
Thx!!!
Thx a lot!!!
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The other answers shown work from RHS to LHS. This one here goes from LHS to RHS
Most important to recognise the special angle.
The other answers shown work from RHS to LHS. This one here goes from LHS to RHS
Most important to recognise the special angle.
Ohh ic! Thanks J!!
Welcome!
By the way, slight error in the formula : It should have been tan (a - b) instead of tan (a + b)
By the way, slight error in the formula : It should have been tan (a - b) instead of tan (a + b)
Thank you for always helping me!
No prob
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