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prove that: (i)sinsquaredalpha+cossquared(alpha+beta)+2sinalphasinbetacos(alpha+beta) is independent of alpha (ii)cossquared(alpha-beta)+cossquaredbeta-2cosalphacosbetacos(alpha-beta) is independent of beta

prove that:
(i)sinsquaredalpha+cossquared(alpha+beta)+2sinalphasinbetacos(alpha+beta) is independent of alpha
(ii)cossquared(alpha-beta)+cossquaredbeta-2cosalphacosbetacos(alpha-beta) is independent of beta

Grade:11

1 Answers

Harsh Patodia IIT Roorkee
askIITians Faculty 907 Points
7 years ago
PFA
On the same basis you can do second one also

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