Question

Find the value of
2 tan² 45° + cos²30 -sin ²60​

Answer 1

Step-by-step explanation:

2+3/4-3/4=2 this is ans

Answer 2

$\bf{2 \: {tan}^{2}45 \degree + {cos}^{2} 30 \degree - {sin}^{2}60 \degree }$

$\rightarrow \:( 2 \times {1}^{2} ) +{ \bigg( \dfrac{ \sqrt{3} }{2} \bigg)}^{2} - { \bigg( \dfrac{ \sqrt{3} }{2} \bigg)}^{2} \\ \\ \rightarrow \:( 2 \times 1) + \cancel{{ \bigg( \dfrac{ \sqrt{3} }{2} \bigg)}^{2} } - \cancel{{ \bigg( \dfrac{ \sqrt{3} }{2} \bigg)}^{2} } \\ \\ \rightarrow \: 2$