angle 0 is in quadrant 1 with sin0 = 2/5. Use the Pythagorean identity, sin^2 0 + cos^2 0 = 1, to calculate the value of cos0 as
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Answer:
Probability of picking an even and then even number =
Step-by-step explanation:
Probability of picking a card with even number,
P(even 1) = =
=
=
Followed by picking a card which is even without putting the first card back.
So an even card is to be picked out of remaining 3 cards.
P(even 2) =
=
Now probability of both events = P(even 1) × P(even 2)
=
=
Therefore, probability of both the events will be .