press green flag -------------------------------------------------------------------------write what you want to calculate a+b:a plus b(e.g.2+3=5) a-b:a minus b(e.g.3-2=1) a*b:a times b(e.g.3*2=6) a/b:a divided by b(e.g.3/2=1.5) a^b:a to the power of b(e.g.2^3=8) a\b:a to the root of b(e.g.3/8=2) aL(small latter)b:base a log b(e.g.2l8=3) 1s(in)a:sin a (deg) 1c(os)a:cos a 1t(an)a:tan a *no bracket at 1.0