1.

sin 50° A,SIS0’ , ९०8८८ ---4८०४50%८०56०40*८०! 0° - sec50°

Answer»

Sin 50= cos 40as sin(90-50) = cos 40change cosec and sec into sin and costhen after putting the valuessin 50/sin50+cos50/sin50-(4*cos50*1/sin50)1+1-42-4= -2Answer



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