Question 1175851



{{{sin (A)=3/5 }}}
{{{cos^2(A) = (1 - sin^2(A)) }}}
{{{cos^2(A) =(1 - (3/5)^2) }}}
{{{cos^2(A) =1 - 9/25}}}
{{{cos^2(A) =25/25-9/25}}}
{{{cos^2(A) =16/25}}}
{{{cos(A) =sqrt(16/25)}}}
{{{cos(A) =4/5}}}

{{{tan (A)=sin (A)/cos(A)}}}
{{{tan (A)= (3/5 )/(4/5)}}}
{{{tan (A)= 3/4 }}}->the exact value of {{{tan(A)}}}


{{{cos (B)=8/17 }}}
{{{sin^2(B) = (1 - cos^2(B)) }}}
{{{sin^2(B) = (1 - (8/17)^2) }}}
{{{sin^2(B) = (1 - 64/289) }}}
{{{sin^2(B) = 225/289}}}
{{{sin(B) =sqrt( 225/289)}}}
{{{sin(B) =15/17}}}

{{{tan (B)=sin (B)/cos(B)}}}
{{{tan (B)= (15/17)/(8/17 )}}}
{{{tan (B)= 15/8}}} ->the exact value of {{{tan(B)}}}