if (A + B+ C+D) =pi, then ∑ cosA cosB - ∑sinA sinB =
if (A + B+ C+D) =pi, then ∑ cosA cosB - ∑sinA sinB =
DEEPIKA SRI KUMARAPPAN , 9 Years ago
Grade 11
Trigonometry> if (A + B+ C+D) =pi, then ∑ cosA cosB - ∑...
1 AnswersSaurabh Koranglekar
Dear student
Let A = B= C= D = pi/4
Value of required expression = 4 ( 0.5 ) - 4 ( 0.5 ) = 0
Regards
Let A = B= C= D = pi/4
Value of required expression = 4 ( 0.5 ) - 4 ( 0.5 ) = 0
Regards
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