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Finalhero
Answers (1)
Reiny in the last step u have done an error as 21^2 =441 + 9^2 = 81 = 522 and 2*21*9*cos(98) = - 54.6 so 522 - (-54.6)=522+52.6=574.6 and square root of 574.6 = 23.97 ~ 24
