Определите знаки значений выражений sin α,cos α,tg α,ctg α,если α равно: 1) 421; 102 ; ") 46π/ 9 ; 39π/10
1) 421:
sin + cos+ tg+ ctg+
102:
sin + cos- tg- ctg-
2) 46π/ 9:
sin - cos- tg+ ctg+
39π/10:
sin - cos+ tg- ctg-
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Answers & Comments
1) 421:
sin + cos+ tg+ ctg+
102:
sin + cos- tg- ctg-
2) 46π/ 9:
sin - cos- tg+ ctg+
39π/10:
sin - cos+ tg- ctg-