Question

4(sin⁴ 60° + cos⁴ 60°) = 1 + 3(sin²60° - Cos² 60°)​

Answer 1

Step-by-step explanation:

4(sin⁴ 60° + cos⁴ 60°) = 1 + 3(sin²60° - Cos² 60°)​

sin 60°=$\frac{\sqrt{3} }{2}$

Cos 60°= $\frac{1}{2}$

​$4(( \frac{\sqrt{3} }{2}) ^{4} +(\frac{1}{2}) ^{4} )=1+3(( \frac{\sqrt{3} }{2}) ^{2} +(\frac{1}{2}) ^{2} )$

then do it by the calculator and they will be equal 2.5

I hope it will help