cos37° cosec53°/
tan5º tan25° tan 45º tan65º tan85°
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Answer:
cos37° cosec(90°-53°)/tan5° tan(90°-25°) tan45° tan65° tan(90°-5°)
cos37° sec37°/tan5° cot65° 1 tan65° cot5°
(cos37 1/cos37°)/(tan5° 1/tan65° 1 tan65° 1/tan5°)
1/1
=1.
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