Annie is adding the expression 4 + 5 + (–4) and follows the procedure of starting at 4, moving right 5 units, and then moving le
ft 4 units.
Beth says she knows another way to find the sum, using the additive inverse property. What procedure could Beth use?
Beth says she knows another way to find the sum, using the additive inverse property. What procedure could Beth use?
1 answer:
You might be interested in
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
= ×
=