Evaluate cos40° cosec50° + sin50° sec40° - Vidyadip

Question

Evaluate
cos40° cosec50° + sin50° sec40°

✓

Answer

cos40° cosec50° + sin50° sec40°
= cos(90°-50°) cosec50° + sin(90° - 40°) sec40°
= sin50° cosec50° + cos40° sec40°
= 1+ 1 = 2

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