Answer:

Step-by-step explanation:
Angles in a triangle add up to 180°


Angles in a straight line add up to 180°


24x___ = 2.4
24/2.4 = 0.1
24x0.1 = 8x3/10
2.4 = 2.4
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
Answer:
2 3 5 7 11 13 17 19 23 27
Step-by-step explanation:
12 I think
Answer:
7/13
Step-by-step explanation: