Grade 12Trigonometry
1+(cosA+cosB)cosC/1+(cosA-cosC)cosB=a^2+b^2/a^2-c^2
1+(cosA+cosB)cosC/1+(cosA-cosC)cosB=a^2+b^2/a^2-c^2
1 Answer
Arun
Dear student
Please put cosine law
cosA = b^2 + c^2 – a^2 / 2bc
You will get the answer.
Regards
Arun
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