Question

2
2tansquare45° + cos² 30 - sin²60​

Answer 1

Answer:

exerise 8.2 ka question 1 ka 3 aur 4 bna lo sab ban jayega baki....

class 10 NCERT

Answer 2

$\fcolorbox{pink}{yellow}{Answer:}$

$2 {tan}^{2} 45 + {cos}^{2} 30 - {sin}^{2} 60 \\ = 2 {(1)}^{2} + {( \frac{ \sqrt{3} }{ 2 }) }^{2} - {( \frac{ \sqrt{3} }{ 2 }) }^{2} \\ = 2$

hope it helps to you☺️

note that,

$tan45 = 1 \\ cos30 = \frac{ \sqrt{3} }{2} \\ sin60 = \frac{ \sqrt{3} }{2}$