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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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