Answer:
m∠I = 45.2°
Step-by-step explanation:
From the picture attached,
By applying cosine rule in in ΔHIJ,
Cos(∠I) = 
= 
= 
m∠I = 
= 45.21
= 45.2°
Therefore, 45.2° will be the correct option.
Answer:
C
Step-by-step explanation:
sin C=12/13
cos A=12/13
so sin C=cos A
Answer:
The original price was 36.40
Step-by-step explanation:
p = original price of cake
using the coupon
p - 15% off = 30.94
p - .15 p = 30.94
Combine like terms
.85p = 30.94
divide each side by .85
p = 30.94/.85
p =36.40
The original price was 36.40

Hope that helps!
<em>ps. I attached a sheet of trigonometry identities</em>