1. 50 degree angle I believe
2. 150 degree angle
3. 45 degree angle
Sorry if this doesn't help but, with no context about the answers they have given you I can't fully help. Try using a protractor like this down below.
Have a good day!
Answer:
4.15932686862 Exact Form:
√
17.3
Step-by-step explanation:
Answer:
85
Step-by-step explanation:
complementary angles = 90* so 85+5=90
Answer:

Step-by-step explanation:
using the 30- 60- 90 triangle for exact values , then
tan60° =
, and
cot60° =
= 
cos60° = 
cot60° cos60°
=
× 
=
← rationalise the denominator by multiplying by 
=
× 
= 
Yes, it's all right. There's no fault