If A+B+C = 2S
Prove that;
sin(S-A) ×sin(S-B)+sin(S-C)×sinC
= sinA. sinB...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 14:04, giany
If A+B+C = 2S
Prove that;
sin(S-A) ×sin(S-B)+sin(S-C)×sinC
= sinA. sinB
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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