$\bf cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)}
\\\\\\
sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)
\\\\\\
cos(\theta)=\pm\sqrt{1-sin^2(\theta)}\\\\
-----------------------------\\\\
cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)}\implies cot(\theta)=\cfrac{\pm\sqrt{1-sin^2(\theta)}}{sin(\theta)}$

6 0

2 years ago

A scale drawing of a door is 2 cm high. If the scale is 1 cm = 4 meters, what is the actual height of the door?

Vikentia [17]

Solve;

If each cm = 4 meters, then you multiply.

4*2

= 8

There are 2 cm, each cm = 4 meters, so you multiply to get your answer.

The final height of the door is 8 meters.

7 0

2 years ago

Please help!

balu736 [363]

I think the answer is B) i’m not 100%

6 0

3 years ago