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CBSE Class 11-science Answered

Find the value of -cos(30)
Asked by lykanbeast04 | 21 May, 2020, 06:49: PM
answered-by-expert Expert Answer
begin mathsize 16px style negative cos 30 degree equals negative space fraction numerator square root of 3 over denominator 2 end fraction end style
Answered by Yasmeen Khan | 21 May, 2020, 11:40: PM

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CBSE 11-science - Maths
clear this doubt
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Asked by mishraparveen1234 | 15 Jun, 2022, 04:56: PM
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CBSE 11-science - Maths
If A+B+C=pi , then equality of equation (1/2)(cosA cosB + cosB cosC + cosC cosA) must hold: a) <= 3/2.   b) >=(-3)   c) <=3/8   d) >=(-1)  
Asked by shanujam03 | 03 Oct, 2020, 08:59: PM
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CBSE 11-science - Maths
Q10
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Asked by omved0304 | 07 Aug, 2020, 11:24: AM
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CBSE 11-science - Maths
Solve question no-4
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Asked by richasingh0708.bmps | 23 Jun, 2020, 10:00: PM
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CBSE 11-science - Maths
If the value of cosec x repeats after an interval of 2straight pi,then what is the value of cosec(7straight pi/6)?
Asked by dppanigrahiadv | 26 May, 2020, 07:03: PM
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CBSE 11-science - Maths
Find the value of -cos(30)
Asked by lykanbeast04 | 21 May, 2020, 06:49: PM
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CBSE 11-science - Maths
Pls solve.
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Asked by pb_ckt | 12 Jun, 2019, 02:48: PM
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CBSE 11-science - Maths
Pls solve
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Asked by pb_ckt | 11 Jun, 2019, 03:33: PM
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CBSE 11-science - Maths
What is trigonometry  
Asked by Singhnitish1475 | 11 May, 2019, 01:46: AM
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CBSE 11-science - Maths
in a right angled triangle the hypotenuse is 2root2 times the perpendicular drawn from  the opposite vertex then then other acute angles of triangle are   
Asked by gargpuneet989 | 10 Jul, 2018, 06:28: PM
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