Jawab:
Trigonometri
rumus jumlah sudut
tan ( x + y ) = ( tan x + tan y )/ (1 - tan x tan y)
tan (x - y) = (tan x - tan y) / (1 + tan x . tan y)
Penjelasan dengan langkah-langkah:
tan (A + B) = 2/3
tan (A - B) = 3/4
.
(A + B) - (A - B) = A + B - A + B
(A + B) - (A - B) = 2B
lihat lampiran
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Jawab:
Trigonometri
rumus jumlah sudut
tan ( x + y ) = ( tan x + tan y )/ (1 - tan x tan y)
tan (x - y) = (tan x - tan y) / (1 + tan x . tan y)
Penjelasan dengan langkah-langkah:
tan (A + B) = 2/3
tan (A - B) = 3/4
.
(A + B) - (A - B) = A + B - A + B
(A + B) - (A - B) = 2B
lihat lampiran