Suppose that tan theta 43 and 0 Solution0

Suppose that tan theta = 4/3 and 0

Solution

0<</2

0</2</4

tan=4/3

cos=3/(4²+3²) =3/5

sin(/2) =[(1-cos)/2]

sin(/2) =[(1-(3/5))/2]

sin(/2) =(1/5)

sin(/2) =1/5

cos(/2) =[(1+cos)/2]

co(/2) =[(1+(3/5))/2]

cos(/2) =(4/5)

cos(/2) =2/5

tan(/2) =sin(/2)/cos(/2)

tan(/2)=(1/5)/(2/5)

tan(/2)=1/2