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If veca=2hati+2hatj+3hatk,vecb=-hati+2ha...

If `veca=2hati+2hatj+3hatk,vecb=-hati+2hatj+hatkandvecc=3hati+hatj` are such that `veca+lambdavecb` is perpendicular to `vecc` , then find the value of `lambda`.

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