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➷ Angles in a triangle equal 180 degrees
Angle B = 180 - (90 + 42)
Angle B = 48 degrees <== this is the answer
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➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ ʜᴀɴɴᴀʜ ♡
