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89. Ikkilangan burchak formulalari. Uchланган burchak formulalari — JAYDARIMOCK
Abituriyent 1-11 to'plami
Trigonometriya
89. Ikkilangan burchak formulalari. Uchланган burchak formulalari
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1.
O'rtacha
Agar
sin
2
α
+
sin
2
β
=
1
va
0
<
α
<
2
π
,
0
<
β
<
2
π
bo'lsa,
α
2
+
β
2
+
2
α
β
ning qiymatini toping.
A)
2
π
2
B)
4
π
2
C)
8
π
2
D)
π
2
Javobni tekshirish
Yechim tahlili
Oldingi
Keyingi
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