X, is assumed to be a random variable by placing letters of the word “YACHT” in a bowl. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is retrieved while a value of 3 is given to all other retrieved letters.
Are the following answers correct?
Letter, X |
Y |
A |
C |
H |
T |
Probability, PX |
4/5 |
1/5 |
4/5 |
4/5 |
4/5 |
Prove that tan thita- cot thita/sin thita cos thita =sec2 thita- cosec2 thita