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Some Applications Of Trigonometry

Question
CBSEENMA10007861

Evaluate:
 cosec25°-sec65°.

Solution

 cosec25°-sec65°
              equals space cosec left parenthesis 90 degree space minus space 65 degree right parenthesis space minus sec space 65 degree
equals space sec space 65 degree space minus space sec space 65 degree space equals space 0.
space

Some More Questions From Some Applications of Trigonometry Chapter