Isosceles and a right triangle
Answer:

Step-by-step explanation:
<u>Trigonometric Identities</u>

<u>Trigonometric ratios</u>

where:
is the angle- O is the side opposite the angle
- A is the side adjacent the angle
- H is the hypotenuse (the side opposite the right angle)
Using the trig ratio formulas for cosine and sine:
<u>Angles</u>


Therefore, using the trig identities and ratios:

It is thirteen because you have to add to 6 till you get eleven and you go up 8 more and then you subtract it all and get your answer
Answer:
-1 and 5
Step-by-step explanation: