Question

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Answer 1

Answer: hello here is ur answer !!!!!!

Step-by-step explanation: cosec 39

1/ cosec^2 51 = sin^2 51 = cos^2 39.

1/ cosec^2 51 +sin^2 39 = cos^2 39 +sin^2 39 = 1.

sec^2 39 = 1/ cos^2 39 = 1/ sin^2 51

sin^2 51* sec^2 39 = 1 .

1/ cosec^2 51 +sin^2 39 - 1 /sin^2 51* sec^2 39 = 0

Hence the given expression is tan^2 51 = ( cot 39) ^2

= (cosec 39/ sec 39)^2

(cosec 39) ^ 2 = x^2

(sec 39) ^2 = x^2/ ( x^2 -1)

(tan 51) ^2 = ( x^2 -1)

given expression is ( x^2 -1)

hope it helps!!!!!!!!!!

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