Answer:
The solutions are:

Step-by-step explanation:
Considering the expression
Solving the expression












So,

Therefore, the solutions are:

Answer:
Angle E is 30⁰
Explanation:
If triangle ABC= triangle DFE then they are both the same it's just that in this case the triangles are mirrored meaning that Angle C= Angle E
Making Angle E: 30⁰
Answer:
cosR = 
Step-by-step explanation:
assuming the right triangle has ∠ Q = 90° with legs 5 and 12
then this is a 5- 12- 13 right triangle with hypotenuse PR = 13 cm
then
cosR =
=
= 
Answer:
In y-intercept form: X = 5
Step-by-step explanation:

Becuz the slope is Undefined