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CBSE Class 11-science Answered

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Asked by sheikhsaadat24 | 17 Apr, 2024, 09:41: PM
answered-by-expert Expert Answer

Question :-

If θ1 + θ2 = 90and θ1= 20°  then wahta is the value of sin2 θ1 + cos2 θ2 ?

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sin2 θ1 + cos2 θ2 = sin2 θ1 + cos2 (90 - θ1 ) = sin2 θ1 + sin2 θ1  = 2 sin2 θ1

sin2 θ1 + cos2 θ2 = 2 sin220 = 0.2340

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