" Q13.Prove that ":1+(cot^(2)alpha)/(1+cosec alpha)=cosec alpha

Prove that : 1+(cot^(2)alpha)/(1+"cosec"alpha)="cesec"alpha

Show that 1 + cot^2 alpha / (1+ cosec alpha) = cosec alpha

Show that 1+cot^2alpha/(1+cosecalpha)=cosec alpha

Prove that : (cot^(2) A)/(cosec A - 1) - 1 = cosec A

Show that sqrt((1+cos alpha)/(1-cos alpha))=cosec alpha + cot alpha

Prove that : [1+ cot alpha- sec (pi/2+alpha)] [1+ cot alpha+ sec (pi/2+alpha)]= 2 cot alpha .

Prove that: (tan^(3)alpha)/(1+tan^(2)alpha)+(cot^(3)alpha)/(1+cot^(2)alpha)=sec alpha cosec alpha-2sin alpha cos alpha

If alpha+beta=90^(@) then prove that cosec^(2)alpha+cosec^(2)beta=cosec^(2)alphacosec^(2)beta .

If tan alpha=2 , then the value of (cosec^2 alpha-sec^2 alpha)/(cosec^2 alpha+sec^2 alpha) is यदि tan alpha=2 है, तो (cosec^2 alpha-sec^2 alpha)/(cosec^2 alpha+sec^2 alpha) का मान ज्ञात करें।

Prove that (sinalpha)/(1+cosalpha)+(1+cosalpha)/(sin alpha)=2"cosec "alpha .