cos30 = √3/2sin60 = √3/2cos45 = √2/2
cos30 sin60 + cos45= (√3/2) (√3/2) + (√2/2)= 3/4 + √2/2= (3 + 2√2)/4
Ответ: (3 + 2√2)/4
cos30 = √3/2
sin60 = √3/2
cos45 = √2/2
cos30 sin60 + cos45
= (√3/2) (√3/2) + (√2/2)
= 3/4 + √2/2
= (3 + 2√2)/4
Ответ: (3 + 2√2)/4