• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

dumb (1 Viewer)

humptydumpty5

Member
Joined
Aug 26, 2021
Messages
85
Gender
Undisclosed
HSC
N/A
How did this person get this answer I put 60cos 30 in the calculator and I didnt get that answer???




1640567513431.png
 

jimmysmith560

Le Phénix Trilingue
Moderator
Joined
Aug 22, 2019
Messages
4,572
Location
Krak des Chevaliers
Gender
Male
HSC
2019
Uni Grad
2022
hello could you tell me how you changed your calculator into degrees mode?
This may depend on the calculator that you use. In my case, I use a CASIO fx-82AU PLUS II. To change my calculator into degrees mode, I press SHIFT then SETUP then the number 3 which is the option for degrees mode.
 

humptydumpty5

Member
Joined
Aug 26, 2021
Messages
85
Gender
Undisclosed
HSC
N/A
This may depend on the calculator that you use. In my case, I use a CASIO fx-82AU PLUS II. To change my calculator into degrees mode, I press SHIFT then SETUP then the number 3 which is the option for degrees mode.
All goods I have the same calculator thank you very much
 

Eagle Mum

Well-Known Member
Joined
Nov 9, 2020
Messages
561
Gender
Female
HSC
N/A
You can use Pythagoras‘ theorem to help remember the angles and ratios of the sides of these two very special triangles (1. half of the unit square and 2. half of an equilateral triangle) - then you won’t need a calculator to work out that cos 30° = √3/2 and therefore that 60 cos 30° = 60 x √3/2 = 30√3

1640869909805.png
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top