Grade 10Trigonometry
prove that tan 15 – cot 75 = sec15 / sec square 15 – 1 .
prove that tan 15 – cot 75 = sec15 / sec square 15 – 1 .
1 Answer
Arun
This question is wrong.
Because
As we know
Cot75 = cot(90- 15) = tan15
Hence LHS =
tan15 - tan15 = 0
But RHS is not zero
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