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We study the transmission probability of Dirac fermions in graphene scatteredby a triangular double barrier potential in the presence of an externalmagnetic field. Our system made of two triangular potential barrier regionsseparated by a well region characterized by an energy gap $G_p$. Solving ourDirac-like equation and matching the solutions at the boundaries we express ourtransmission and reflection coefficients in terms of transfer matrix. We showin particular that the transmission exhibits oscillation resonances that aremanifestation of the Klein tunneling effect.

Transmission via Triangular Double Barrier and Magnetic Fields in Graphene