without using trigonometric tables evaluate tan 35/cot 55 + cot 78/tan 12 - tan 45
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Hii.
{Tan35/cot(90-35)} +{cot78/tan(90-78)} -12
Tan35/tan35+cot78/cot78-1
1+1-1
1 is your answer
{Tan35/cot(90-35)} +{cot78/tan(90-78)} -12
Tan35/tan35+cot78/cot78-1
1+1-1
1 is your answer
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