Question

If 3cota=4 find the value of cosec2a+1/cosec2a-1

Answer 1

Answer:

• cota =4/3=cos/sin
• cos=4/5,sin=3/5
• ( a=3 ,b=4 then c=5 )
• cosec=5/4=c/b
• sec=5/3
• then cosec a=5/4
• cosec 2(5/4)+1/cosec2(5/4)-1=cosec(5/2)+1/cosec(5/2)-1=cosec3.5/cosec1.5