Need help on this asap

It’s 81°

Do the Pythagoras theorem first:

1.6^2+10^2= 102.56

Then square root 102.56

=10.2 (rounded)

Then the hypotenuse is 10.2

Then apply the Sine rule:

Sin A/ a = Sin B/ b = Sin C/ c

Substitute the values into the formula:

Sin 90/ 10.2 = sin x/ 10

Obviously we need to get sin x alone so we need to move the 10 into the fraction of Sin 90/10.2.

Shown here:

10Sin(90)/ 10.12

This equals sin x = 0.988

Then we need to get x alone:

Therefore we make Sin into a minus:

Sin^-

Which leads us to:

x°= sin ^- (0.988)

To 81.11

Found that and x° is

x= 81°

I hope this was helpful and I couldnt take a picture because it wouldn’t fit, oops .