UP TGT Mathematics Trigonometry Test Series - Part 4
The formula for sin C + sin D is given by:
Type: MCQ • Marks: 1
The formula for sin C + sin D is given by:
Options
A. 2 cos((C + D)/2) sin((C - D)/2)
B. 2 sin((C + D)/2) cos((C - D)/2)
C. 2 sin((C + D)/2) sin((C - D)/2)
D. 2 cos((C + D)/2) cos((C - D)/2)
Explanation
(2 sin((C + D)/2) cos((C - D)/2)). Factor formulae convert sums/differences into products (e.g., sin C + sin D = 2 sin((C+D)/2) cos((C-D)/2)) and products into sums.
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