sin242-sin284=
sin242-sin284=
melvin , 10 Years ago
Grade 11
Trigonometry> sin 2 42-sin 2 84=...
1 Answers
Nishant Vora
Last Activity: 10 Years ago
Hello student, Please find the answer to your question below
sin242-sin284
= (sin42-sin84)(sin42+sin84)
use the following formulas :-
SinC + SinD = 2Sin[(C+D)/2]Cos[(C-D)/2]
SinC - SinD = 2Cos[(C+D)/2]Sin[(C-D)/2]
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