x=costheta-5sintheta, y= 4sintheta +5costheta
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see the image for the answer
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Hey there!
Taking L.H.S:
sin Ф / (1 + cos Ф) + (1 + cos Ф) / sin Ф
= [ sin²Ф + ( 1 + cos Ф)² ] / ( 1 + cosФ) . sin Ф
= [ sin² Ф + 1² + cos²Ф + 2 cosФ ] / (1 + cos Ф) . sin Ф
= [sin²Ф + cos²Ф + 1 + 2 cosФ] / (1 + cos Ф) . sin Ф
{ ∵ sin² Ф + cos² Ф = 1}
= [ 1 + 1 + 2 cosФ ] / ( 1 + cosФ) . sinФ
= [2 + 2 cosФ] / ( 1 + cosФ) .sinФ
= [ 2 ( 1 + cosФ)] / ( 1+ cosФ). sinФ
= 2 * 1 / sin Ф
= 2 cosec Ф { ∵ 1 / sinФ = cosec Ф}
= R.H.S
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