cos135= -cos45 = -√2/2
sin90 = 1
cos90 = 0
a) -√2/2 * 1 - 0 = -√2/2
tg120 = -tg60 = -√3
tg150 = -tg30 = -√3/3
sin60 = √3/2
b) -√3 -√3/3:√3/2 = -√3 - 2/3
Pozdrawiam
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cos135= -cos45 = -√2/2
sin90 = 1
cos90 = 0
a) -√2/2 * 1 - 0 = -√2/2
tg120 = -tg60 = -√3
tg150 = -tg30 = -√3/3
sin60 = √3/2
b) -√3 -√3/3:√3/2 = -√3 - 2/3
Pozdrawiam