Grade 11Trigonometry
Prove that the value of 1/2cos^-1(3/5) = tan^-1(1/2)
Prove that the value of 1/2cos^-1(3/5) = tan^-1(1/2)
1 Answer
Arun
Dear student
hence we have to prove that
cos^-1(3/5) = 2 tan^-1(1/2)
RHS
cos^-1 (1 – ¼ / 1 + 1/4) = cos^-1 ( 3/5)
hence proved
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