Pls help i don’t understand
1 answer:
You might be interested in
Answer:
<u>Step-by-step explanation:</u>
cot is on the Unit Circle. When is cos =
and sin =
? In other words, where is the coordinate
on the Unit Circle?
It occurs at 60° = radians
**************************************************************************************
Answer: cot θ
<u>Step-by-step explanation:</u>
sec (90 - θ) * cos θ
= * cos θ
=
=
=
=
= cot θ
**************************************************************************************
Answer: BC = √5, AC = 2√5
<u>Step-by-step explanation:</u>
= 60°, which means ΔABC is a 30°-60°-90° triangle so we can use the side length formulas: x - x√3 - 2x.
∠C is the 60°. It matches to side AB so: AB = x√3 = √15 ⇒ x = √5
∠A is the 30°. It matches to side BC so: BC = x = √5
∠B is the 90°. It matches to side AC so: AC = 2x = 2(√5) = 2√5
**************************************************************************************
Answer: k = 4, RS = 12, QS = 28
<u>Step-by-step explanation:</u>
proportionality constant k can be found with =
= 4
→ 4 =
→ 4(3) = RS
→ 12 = RS
→ 4 =
→ 4(7) = QS
→ 28 = QS
Answer:
<h2>Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>- PEMDAS
order of PEMDAS
- parentheses
- exponent
- multiplication or
- division
- addition or
- substraction
- left to right
simplify multiplication:
use to simplify:
as we know x¹=x
therefore our final answer is
- <em><u>6</u></em><em><u>5</u></em>