in a right triangle the sum of its right angle and one of the acute ones is 102 °. How much does the other acute angle measure?

168 °

Step-by-step explanation:

When acute is 102 then the inner angle is 180°-102°=78°

For a right angle triangle, one side is 90° degrees and the sum of all angles is 180°

The other inner angle will be

180°-90°-78°=12°

The other acute will be 180-12=168 °