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 
=
× 
= 
Answer:
2x + 6 = 10
x = 2
Step-by-step explanation:
2x + 6 = 10
2x = 4
x = 2
Answer: the answer should be 52
Step-by-step explanation:
All I’d did is 20-32-40=52