Answer:
5
Step-by-step explanation:
The geometric mean of 2 numbers a and b is

Hence
The geometric mean of 5 and 10 is

= 
=
=
×
= 5
It looks like for all of these we will be using the Pythagorean theorem.
If you don't know what this is or how to apply it, go to the website "Khan Academy" and watch his video(s) on it. I would suggest going to that site whenever you don't understand something in math :)
I'll just be giving you the answers and won't explain what I'm doing, but please do go to Khan Academy to find out how to do it on your own!!
Anyway, onto the answers.
1) a = 12.5, b = 5.7, c = 13.7.
2) 24
3) 19.2
4) 6.4
5) 18.7
6) 98.5
7) 1.9
Hope this helps!!!
Proved
Step-by-step explanation:
Cosec2A + cot2A = cotA
On Left hand-side



Learn More
Trigonometric ratios: brainly.com/question/12462203
Keywords: Trigonometeric
#LearnwithBrainly
Answer:
Adding 1 every time if you can tell
Step-by-step explanation:
Answer:
PR is an altitude
QT is a median.
Step-by-step explanation:
The altitude is the perpendicular height and the median is a line from 1 vertex to the middle of the opposite side.