SinA = 3/5
cosA = 4/5
cosB = 3/5
sinB = 4/5
sin(A+B) = sinAcosB + cosAsinB
= (3/5)(3/5) + (4/5)(4/5)
= 9/25 + 16/25
=(9+16)/25
=25/25
=1
therefore, the answer is B
I’m not too sure to be honest with you.
Answer:
x ≈ 17.5
Step-by-step explanation:
using Pythagoras' identity in the right triangle.
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is
x² = 9² + 15² = 81 + 225 = 306 ( take square root of both sides )
x =
≈ 17.5 ( to the nearest tenth )
47 days because If it’s half of the lake and doubles one more time then it would be the full lake
Answer:
The question is imcomplete.
Step-by-step explanation:
There is no zoom link or real question.