1.

If f(x)=∣∣∣∣∣tan xsin xcos xtan xsec x+cos xcos2xcos2xcosec2x1cos2xcos2x∣∣∣∣∣ Then −π∫+πf(x)dx=2kπ. Therefore, the value of k is

Answer» If f(x)=

tan xsin xcos xtan xsec x+cos xcos2xcos2xcosec2x1cos2xcos2x

Then π+πf(x)dx=2kπ. Therefore, the value of k is


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