प्र.10अन्तराल [0, 57] में स्थित x

1.	प्र.10अन्तराल [0, 57] में स्थित x के मानों की संख्या जोसमीकरण 3cos2x - 10cosx + 7 = 0 को संतुष्ट करते(A) 5(B) 6(C) 8(D) 10
Answer» (c) is the right answee the answer is b as it is simple if you want solution you can tell it in google mike in which my answe is there B, option is correct answer

प्र.10अन्तराल [0, 57] में स्थित x के मानों की संख्या जोसमीकरण 3cos2x - 10cosx + 7 = 0 को संतुष्ट करते(A) 5(B) 6(C) 8(D) 10

Answer»

the answer is b as it is simple if you want solution you can tell it in google mike in which my answe is there

B, option is correct answer