Question

I need help can someone help me

Answer 1

Solution is in the attached photo.

Explanation:

This question tests on the concept of triangles, as this is an isosceles triangle, the other 2 unknown angles are the same, as well as the sine rule.

Answer 2

x ≈ 12.7

Explanation:

since the triangle is isosceles then the 2 legs are congruent, both 9

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 + 9² = 81 + 81 = 162 ( take square root of both sides )

x =
`√(162)` ≈ 12.7 ( to the nearest tenth )