Answer:
cscX = 
Step-by-step explanation:
using the trigonometric identity
cscX = 
sinX =
= 
cscX =
= 
Answer:
7/15
Step-by-step explanation:
<em>No. of green marbles in the bag= 7</em>
<em>No. of blue marbles in the bag= 8</em>
<em>Total no. of marbles in the bag= 7+8=15</em>
As we know that,
Probability( of a random event A)= 
Hence in this case,
Favourable np. of elementary events (green marbles)=7
Total no. of elementary events (Total no. of marbles in the bag)= 15
Hence, Probability of picking a green marble from the bag=
Answer:
e. R′
Step-by-step explanation:
Let the Sample Space be a universal set consisting of 3 red and 6 blue cards. Then the event of of getting 4 blue cards will be given
R complement = R` = Universal Set minus Red cards will give blue cards.
a. R OR O
It cannot be this option because we need 4 blue card
b. B AND O
It cannot be this choice as well because 4 is not odd.
c. R OR E
4 is even but we need blue
d. R AND O
Red and odd is again not required
e. R′ = It will give our required result.
f. E′= 4 is even if it is complemented it cannot be obtained and will be left out.