[" 20.यदि "cot B=(12)/(5)" ,सिद्ध कीजिए- "],[qquad tan^(2)B-sin^(2)B=sin^(4)B sec^(2)B]

If cot B=(12)/(5), prove that tan^(2)B-sin^(2)B=sin^(4)B sec^(2)B

If cot B= 12/5 Prove that tan^2B-sin^2B=sin^4B.sec^2B .

If cotB=(12)/5 , prove that tan^2B-sin^2B=sin^4Bsec^2B .

Prove : (1-cos^(2)A) *sec ^(2)B + tan^(2)B (1- sin^(2)A) = sin^(2) A + tan^(2)B

सिद्ध कीजिए कि 2tan^(-1)sqrt((b)/(a))=cos^(-1)((a-b)/(a+b))

If A+B = 90^(@) , then prove that sin^(2)A+sin^(2) B=1 tan^(2)A+cot^(2) B=0 .

Prove that (i) (sin^(2)A cos^(2)B - cos^(2)A sin^(2) B )=(sin^(2)A- sin^(2)B) (ii) (tan^(2)A sec^(2)B - sec^(2)A tan^(2)B)=(tan^(2)A- tan^(2)B)

If 2sin^(2)A-cot^(2)B=1 then sin A sin B=

Show that tan^2A-tan^2B=(sin^2A-sin^2B)/(cos^2Acos^2B)

sec^(2)A sec^(2)B-sec^(2)A tan^(2)B-tan^(2)A sec^(2)B+tan^(2)A tan^(2)B=