pls answer this question..
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We knw that
tanQ=sinQ/cosQ,
cotQ=cosQ/sinQ
put in above question we get
(sinq/cosq)^2+(cosq/sinq)^2
(sinq)^2/(cosq)^2+cosq)^2/(sinq)^2
take lcm we get
(sinq)^4+cos^4q))/cos^2Qsin^2q
now add and substrate 2sin^2qcos^2q into numerator
by using sin^2Q+cos^2q=1
we get 1-
(1-2sin^2qcos^2q)/cos^2qsin^2q
now separated we can write
1/cos^2qsin^2q-2
so we put any value of q in above equation we get always result more than -2
tanQ=sinQ/cosQ,
cotQ=cosQ/sinQ
put in above question we get
(sinq/cosq)^2+(cosq/sinq)^2
(sinq)^2/(cosq)^2+cosq)^2/(sinq)^2
take lcm we get
(sinq)^4+cos^4q))/cos^2Qsin^2q
now add and substrate 2sin^2qcos^2q into numerator
by using sin^2Q+cos^2q=1
we get 1-
(1-2sin^2qcos^2q)/cos^2qsin^2q
now separated we can write
1/cos^2qsin^2q-2
so we put any value of q in above equation we get always result more than -2
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