24. 43 degrees
25. 90 degrees
26. 47 degrees
I don’t really know what the question was so I assumed you wanted the angle of each?
Answer: 
Step-by-step explanation:
Total number of cards in a deck = 52
Number of red cards = 26
Number of cards not red =
Number of ways to draw not red cards = 
Total ways to draw 3 cards = 
The probability that none of three cards are red = 
[∵
]

Now , the probability that at least one of the cards drawn is a red card = 1- Probability that none cards are red

Hence, the required probability = 
Answer:
9^2 + x^2 = 12^2
x^2 = 144 - 81
x^2 = 63
x = √63 = 3√7 or 8
hope that answers your question