Question

evaluate cos²30°+sin²45°-1/3tan²60°
plz it is urgent for 50 points ​

Answer 1

Answer:

here is your answer bro

Answer 2

Step-by-step explanation:

$= \frac{ {cos}^{2}30 + {sin}^{2} 45 - 1 }{3 {tan}^{2}60 } \\ \\ = \frac{( { \frac{ \sqrt{3} }{2} })^{2} + {( \frac{1}{ \sqrt{2} } })^{2} - 1 }{3 {( \sqrt{3} })^{2} } \\ \\ = \frac{ \frac{3}{4} + \frac{1}{2} - 1}{3(3)} \\ \\ = \frac{ \frac{3}{4} + \frac{2}{4} - 1 }{9} \\ \\ = \frac{ \frac{5}{4} - 1 }{9} \\ \\ = \frac{ \frac{5 - 4}{4} }{9} \\ \\ = \frac{ \frac{1}{4} }{9} \\ \\ = \frac{1}{9 \times 4} \\ \\ = \frac{1}{36}$