b.4/5
c.4/15
d.7/15
Alright ill try to make this simple,
First lets Do the Equation 3/5 x 4/9 = 12/45
Now Let's Simplify 12/45 Simplified is 4/15
Your answer would be C. 4/15
Answer:
Step-by-step explanation:
we know that
If the terminal ray of β lies in the fourth quadrant
then
sin (β) is negative and cos (β) is positive
Remember the trigonometric identity
we have
substitute
apply root square both sides