Question

sin90+cos30+tan30+cos60x90x50xcos50xsin90=?

Answer 1

sin90 = 1
cos30 = $\frac{ \sqrt{3} }{2}$
tan30 = $\frac{1}{ \sqrt{3} }$
cos60 = $\frac{1}{2}$
cos50 = 0.64

=1+$\frac{ \sqrt{3} }{2}$+$\frac{1}{\sqrt{3} }$+$\frac{1}{2}$x90x50x0.6x1
=1442.44

Answer 2

sin90=1,cos30=(3^1/2)/2,tan30=1/3^1/2,cos50=0.64,cos60=1/2
sin90+cos30+tan30+cos60*90*50*cos50*sin90
=1+(3^1/2)/2+1/(3^1/2)+(1/2)*90*50*(0.64)*1
=1+1.224+0.577+1440
=1442.781