Sin x = a/c
cos x b/c
tan x = a/b
Five plus four x is equal to 2x-9
There isn’t enough information for us to help you:(
Ow... this geometry is sure hard!!
.
Wait a second. Nope.
.
TWO SIDES!!
.
ITT!!
.
CONVERSE ITT!!
.
Converse Isosceles Triangle Theorem!
.
Look at the picture I attached.
.
Two angles equal... THE SIDES ADJACENT TO IT EQUAL!!
.
PERFECTO!!
.
Hope I helped!!
Source: I am learning Honors Geometry, near end of course.
The answer should be -4,
7x2=14
2x-9=-18
14+ -18= -4