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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, 18:07: 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, 21:01: PM

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CBSE 11-science - Maths
1+sinx+cosx/1+sinx-cosx=cotx/2
Asked by mihirkumarjha356 | 18 Jul, 2024, 21:51: PM
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CBSE 11-science - Maths
prove using identities cos4xsin3x-cos2xsinx/sin4xsinx+cos6xcosx =tanx
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CBSE 11-science - Maths
convert 43.1025° into minute and second
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CBSE 11-science - Maths
Prove that \sqrt{\frac{1-cos~2\theta}{1+cos~2\theta}}=tan
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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, 21:49: PM
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CBSE 11-science - Maths
cos(90+x)=sinx,,how
Asked by ghoshshawata62 | 04 Mar, 2024, 20:16: PM
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CBSE 11-science - Maths
sin(90+?)*.tan(270-?)*.cot(360-?)/cot(-?)*.tan(90+?)*.cos(180+?)=
question image
Asked by nayaktapaswini2007 | 29 Feb, 2024, 09:10: AM
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CBSE 11-science - Maths
if cot 4?+cot2?=1 prove that sin4?+ sin2? =1
Asked by bimanmandal53361 | 15 Jan, 2024, 00:32: 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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