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30 degrees.

A right triangle will have one angle that is 90 degrees. If another angle is 60, you can set up your equation like this to find the third angle - and remember that interior triangle angles equal 180 -

90 + 60 + x = 180

150 + x = 180
-150 -150

x = 30
devishri1977

Answer:

Step-by-step explanation:

Sum of all three angles of triangle  = 180

x + 60 +90  = 180

x + 150 = 180

x = 180 -150

x = 30

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