Question

if sin^2(28°) +sin^2(b)= 1 then angle b = ?

Answer 1

Sin^2(28°)+sin^2(b)=1
We know that..
Sin^2@+cos^2@=1
Therefore..
Sin^2(28°)+cos^2(28°)=1
Sin^2(b)=cos^2(28°)
Sin^2(b)=sin^2(90°-28°)
Sin^2(b)=sin^2(62°)
B=62°