Question

СРОЧНО!Спростіть вираз: 1) 1+sin^ 60^ +cos^ 60^ ;2)2cos^ 45 deg + sin 45 deg - 1 .​

Answer 1

1) 1 + sin^60° + cos^60° = 1 + (sin^2 60° + cos^2 60°) = 1 + 1 = 2.

2) 2cos^45° + sin45° - 1 = √2 + √2 - 1 = 2√2 - 1.