Question

4 sin2 60 + 3 tan2 30 - 8 sin 45.cos 45​

Answer 1

Step-by-step explanation:

$4 ({ \frac{3}{2} })^{2} + 3( { \frac{1}{ \sqrt{3} } })^{2} - 8( \frac{1}{ \sqrt{2} } )( \frac{1}{ \sqrt{2} } )$

$4 \times \frac{9}{4} + 3 \times \frac{1}{3} - 8 \times \frac{1}{2}$

$= 9 + 1 - 4$

$= 6$

i hope it will help u mate....☺☺

Answer 2

Step-by-step explanation:

4sin²60 + 3 tan² 30 - 8 sin 45x cos 45

I hope this is your question bro...

now, sin 60=root3/2

so,sin²60=3/4

similarly,tan²30=1/3,sin45=1/root2 and cos 45=1/root 2

SO,

=4x3/4+3x1/3-8x1/root 2 x 1/root2

=3+1-4

=4-4

=0

hope it helps....