Question

Class 10 Trigonometry lesson’s extra qns doubt plz help me with this qn

Answer 1

Answer:

HEY THERE< HERE IS YOUR SOLUTION,

Step-by-step explanation:

REMEMBER THAT THEY ARE MANY WAYS OF PROVING A STATEMENT< ONE OF THEM IS STARTING SOLVING L.H.S. TO A PARTICULAR POINT AND THEN SOLVING R.H.S. TO THE SAME POINT AS L.H.S.

AND HERE ALSO I DID THE SAME,

L.H.S.⇒[(cosФ/sinФ)+[1/sinФ]^2=(cos²Ф+1+2cosФ)/sin²Ф-------------(1)

R.H.S.⇒[(1+cosФ)/1-cosФ)]

           =[(cos²Ф+1+2cosФ) / (1²-cosФ²)]      {∵ squaring R.H.S.}

            =[(cos²Ф+1+2cosФ)] / (sin²Ф)]    {∵(1- cos²Ф)=sin²Ф)-----------(2)

NOW AS EQUATION (1) IS EQUAL TO EQUATION (2) ,

HENCE PROVED....

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