Question

Emaths trigo question ! Can someone help to solve Q20 in the attached file ? please explain to me how to get the answers provided, thank you ! ^^

Answer 1

whats sin^-1(1/2)= ____radian?

Answer 2

arc sin(1/2)= ____radian?

Answer 3

sin x=1/2
then
x=arc sin(1/2)=___radian?

Answer 4

i can only get the ans 0.524 but cant get the other answer :(

Answer 5

ok lets try to do this like this

whats 0.524 rad in degrees?

Answer 6

31.054° ?

Answer 7

its 30 degrees correct?
then to find the other theta in degrees would be
180 deg - 30deg = a50 deg=___rad?

Answer 8

2.62 ° ! omg thank you so much ! ^^

Answer 9

so the diagram is actually useless right ? >< only the bottom statement is needed to solve

Answer 10

yup it looks like the 2.3 is an arc