Math, asked by Ankitchorgade83, 1 year ago

please solve this question..........​

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Answers

Answered by venkatlokesh011
1

Answer:

Step-by-step explanation:

cosec Ф + cot Ф = p

1/ cosec Ф + cot Ф = 1/p

Rationalise by taking conjucate,

1 x cosec Ф - cot Ф                                 = 1

cosec Ф + cot Ф x cosec Ф - cot Ф          p

∴ cosec Ф - cot Ф = 1/ p ( since in denominator, cosec²Ф - cot²Ф =1 )

cos Ф = p² - 1/ p² + 1

= p ( p - 1/ p)

  p ( p + 1/p )

= cosec Ф + cot Ф - cosec Ф + cotФ

  cosec Ф + cot Ф + cosec Ф - cot Ф  

= 2 cot Ф

  2 cosec Ф

= cos Ф x sinФ

  sinФ

= cos Ф

Hence Proved


Ankitchorgade83: thanks
venkatlokesh011: You are right
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