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CBSE Class 11-science Answered

sinx=1/2  then find the value of cosx
Asked by md.ameenkhan9292 | 29 Jun, 2019, 06:07: PM
answered-by-expert Expert Answer
sin space straight x space equals 1 half now sin squared straight x space plus space cos squared straight x space equals space 1 1 fourth plus space cos squared straight x space equals space 1 space cos squared straight x space equals space 3 over 4 cosx space equals space fraction numerator square root of 3 over denominator 2 end fraction... left parenthesis positive space because space sine space is space positive space and space we space consider space 1 st space quadrant right parenthesis
Answered by Arun | 29 Jun, 2019, 09:01: PM

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CBSE 11-science - Maths
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Asked by nityaboragam | 11 Apr, 2024, 12:14: PM
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CBSE 11-science - Maths
find the value of 2sin square 3pie by 4+3cos square 3pie by4-2tan square 3pie by 4
Asked by rajyothi64 | 05 Mar, 2024, 09:49: PM
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CBSE 11-science - Maths
cos(90+x)=sinx,,how
Asked by ghoshshawata62 | 04 Mar, 2024, 08:16: PM
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CBSE 11-science - Maths
sin(90+θ)*.tan(270-θ)*.cot(360-θ)/cot(-θ)*.tan(90+θ)*.cos(180+θ)=
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Asked by nayaktapaswini2007 | 29 Feb, 2024, 09:10: AM
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CBSE 11-science - Maths
if cot 4θ+cot2θ=1 prove that sin4θ+ sin2θ =1
Asked by bimanmandal53361 | 15 Jan, 2024, 12:32: AM
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CBSE 11-science - Maths
asec theta +btan theta=1 asec theta- btan theta=1 a^2(b^2+4)=
Asked by sreyas.katuri | 23 Sep, 2023, 07:12: AM
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CBSE 11-science - Maths
Sin(x)/√2+cos(x)/√2=√3/2
Asked by 069.pks | 16 Sep, 2023, 10:06: AM
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CBSE 11-science - Maths
Prove that:sin²0+sin²Π÷2+sin²π÷3+sinπ÷2=2
Asked by surekhashriwas01 | 12 Sep, 2023, 08:39: PM
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CBSE 11-science - Maths
The pe period of sin x (Pi /3+x)sin(pi/3-x)is
Asked by mvr23467 | 12 Sep, 2023, 07:52: PM
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CBSE 11-science - Maths
cos 1710
Asked by SasipriyaNagappan | 27 Jul, 2023, 07:22: PM
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