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CBSE Class 11-science Answered

Pls solve.
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Asked by pb_ckt | 23 May, 2019, 03:46: PM
answered-by-expert Expert Answer
sin2(θ/2) = (1+cosθ) / 2
 
hence sin2(45/2) = (1+cos45)/2  = [1 + (1/√2) ] /2  =  (√2 +1 ) / (2√2) = (2 + √2 )/2
Answered by Thiyagarajan K | 23 May, 2019, 04:24: PM
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CBSE 11-science - Physics
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Asked by sheikhsaadat24 | 17 Apr, 2024, 09:41: PM
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CBSE 11-science - Physics
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Asked by sy123946 | 07 Apr, 2024, 04:23: PM
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CBSE 11-science - Physics
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Asked by derhebha955 | 03 Apr, 2024, 09:03: AM
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CBSE 11-science - Physics
In this que while solving it we take D F of alpha =D.F of beta.Why is it so?
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Asked by sumedhasingh238 | 29 Mar, 2024, 05:15: PM
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CBSE 11-science - Physics
In physics if 2 quantities are dimensionless then their dimensional formula are equal?
Asked by sumedhasingh238 | 28 Mar, 2024, 11:10: PM
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CBSE 11-science - Physics
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Asked by roshnibudhrani88 | 23 Mar, 2024, 05:52: PM
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CBSE 11-science - Physics
The second overtone of a pipe closed at one end has the same frequency as the third overtone of a pipe open at both ends. Compare the length of the pipes
Asked by emad.amd | 21 Mar, 2024, 12:00: PM
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CBSE 11-science - Physics
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Asked by vinitdubey7735 | 14 Mar, 2024, 11:21: AM
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CBSE 11-science - Physics
Q17. The velocity time relation of an electron starting from rest is given by v = kt where k = 6m / (s ^ 2) Calculate the distance traversed in 2 sec. 122
Asked by om636694 | 04 Mar, 2024, 09:10: PM
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CBSE 11-science - Physics
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Asked by rajuinwati12 | 04 Mar, 2024, 09:22: AM
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