Question

Cos square 30 degree + sin square 45 degree - 1 upon 3 + tan square 60 degree + cos 90 degree

Answer 1

Answer:

Step-by-step explanation:

=cos^2 30 + sin^2 45 - 1/3 tan^2 60 + cos 90

=(root 3 / 2)^2 + (1 / root 2)^2 - 1/3 (root 3)^2 + 0

=3/4+1/2-1+0

=3+2-4/4

=1/4

Answer 2

${ (\frac{ \sqrt{3} }{2} )}^{2} + { (\frac{1}{ \sqrt{2} } )}^{2} - \frac{1}{3} + 3$
$\frac{3}{4} + \frac{1}{2} - \frac{1}{3} + 3$
$\frac{9 + 6 - 4 + 12}{12}$
$\frac{23}{12}$