I saw this problem half answered already but the answers I got were wrong

A 238U nucleus is moving in the x-direction at 4.8×105m/s when it decays into an alpha particle (4He) and a 234Th nucleus. The alpha moves at 1.2×107m/s at 36∘ above the x-axis.

a. Find the speed of the thorium nucleus. v=

b. Find the direction of the motion of the thorium nucleus.

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