If `cos9alpha=sinalpha` and `9alpha lt 90^(@)`, then the value of `tan5alpha` is

If cos9alpha=sinalpha and 9alpha<90^@ then the value of tan 5alpha is

If cos alpha=(5)/(13) and 0 lt alpha lt 90^(@) , then the value of cot alpha+"cosec "alpha is

if 7 sin alpha = 24 cos alpha 0 lt alpha lt pi/2 . Then the value of 14 tan alpha - 75 cos alpha-7 sec alpha is

If sec alpha = (13)/(5) " where " alpha lt 90^(@) , then the value of (2-3 cot alpha )/(4-9 tan alpha ) =

If A=[(cos alpha, -sinalpha),(sin alpha, cos alpha)] , then A+A^(T)=I , if the vlaue of alpha is

If A = [(cos alpha, - sinalpha),(sinalpha, cosalpha)] , then for what value of alpha , is A an identity matrix?

If sinalpha=5/13 and pi/2ltalphaltpi then the value of (secalpha+ tan alpha)/(cosec alpha - cot alpha)

If sinalpha=3//5 and 90^(@)ltalphalt180^(@) then cos3alpha=