Question

Josie pulls a bookcase up a ramp to load it into a truck with a force of 66 N. The force moving the bookcase vertically upwards is 23 N as shown in the diagram. What is the angle of the ramp to the ground?

18.95°

20.39°

70.79°

69.92°

Answer 1

@Ishaan94

Answer 2

Sin theta = 23/66

Answer 3

what is theta?

Answer 4

angle that u hv to find

Answer 5

so what would i enter in my calculator?

Answer 6

so far i have sin(23/66 in my calculator

Answer 7

inverse sin(23/66)

Answer 8

i got .34848

Answer 9

if thats is radian, u ll need to change it in degrees

Answer 10

it is in degrees mode

Answer 11

(23/66) = .34848

now u ll need to do inverse sine of it

Answer 12

how would i do that on my calculator?

Answer 13

type .34848

and then do inv sin

Answer 14

ok, i got it now. 20.39

Answer 15

cool
thnx for the medal

Answer 16

thank you :)