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in a triangle ABC the value of sin 2 A+sin 2 B +sin 2 C=? where a,b ,c are lengths of sides of triangle

in a triangle ABC the value of sin2A+sin2B
+sin2C=? where a,b ,c are lengths of sides of triangle

Question Image
Grade:12

1 Answers

SAFRIN
40 Points
3 years ago
sin A÷a=sin B÷b=sin C÷c=ksin A=ka sin B=kb sin C=kcsin ^2 A=k^2×a^2 sin ^2 B=k^2×b^2 sin ^2 C=k ^2×c^2sin ^2 A+sin ^2 B+sin ^2 C=k^2 (a^2+b^2 +c^2

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