" 20.Evaluate "(sec A+tan A)*(1-sin A)" for "A=60^(@)

(sec A (sec A + tan A)(1-sin A))/ ((cosec^2 A-1)sin^2 A) is equal to: (sec A (sec A + tan A)(1-sin A))/ ((cosec^2 A-1)sin^2 A) का मान क्या होगा ?

Evaluate : 2 sec 30^(@) xx tan 60^(@)

Evaluate : 2 sec 30^(@) xx tan 60^(@)

Prove that (1+sec A-tan A)/(1+sec A+tan A)=1-sin A/(cos A)

Evaluate : (sin 30^(@) + tan45^(@) - cosec 60^(@))/(sec 30^(@) + cos 60^(@) + cot 45^(@))

sqrt((1+sin A)/(1-sin A))=sec A+tan A

Prove that sec A(1-sin A)(sec A+tan A)=1

Prove: sec A(1-sin A)(sec A+tan A)=1

Evaluate the following (sec^(2) 60^(@) -tan ^(2) 60^(@) )/( sin ^(2) 30^(@) +cos ^(2) 30^(@) )