sec 50 degree sin 40 degree +cos40degree cosec50degree
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SEC 50° SIN 40° + COS 40° COSEC 50°
==> SEC(90°-40°) SIN 40° + COS(90°-50°) + COSEC 50°
==> COSEC 40° SIN 40° + SIN 50° + COSEC 50°
==> SIN 90° + COSEC 90°
==> SIN 90° + 1/SIN 90°
==> SIN²90° + 1 / SIN 90°
==> COS²90° / SIN 90°
I HOPE ITS HELPFUL
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cos square 90 degrees / sin 90 is the final answer
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