Two angles of a right angled triangle are 30 and 90 what is third angle?
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rule:
all 3 (interior) angles of a triangle= 180°.
let the unknown angle be x.
so, x = 180° - (90+30)°
which implies, x = 180° - 120°
which implies, x = 60°.
therefore, the 3rd angle is 60°.
all 3 (interior) angles of a triangle= 180°.
let the unknown angle be x.
so, x = 180° - (90+30)°
which implies, x = 180° - 120°
which implies, x = 60°.
therefore, the 3rd angle is 60°.
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