Turn on thread page Beta
    • Thread Starter
    Offline

    9
    ReputationRep:
    cos(48*13) should equal 8.698697883 according to mathswatch
    But my calculator is saying its -0.1045284633??

    Another example: sin23*60= 23.4 (rounded) but my calculator is saying -0.866023...??

    Its doing the same to other questions as well! Is my calculator broken??
    Offline

    1
    ReputationRep:
    (Original post by web-girl)
    cos(48*13) should equal 8.698697883 according to mathswatch
    But my calculator is saying its -0.1045284633??

    Another example: sin23*60= 23.4 (rounded) but my calculator is saying -0.866023...??

    Its doing the same to other questions as well! Is my calculator broken??
    cos(48) x 13 =8.69......
    cos(48x13)= -0.104....

    same problem for sin I presume. Sin and Cos cannot take values greater than 1 or less than -1.
    Offline

    14
    ReputationRep:
    is your calculator in degrees?
    Offline

    2
    ReputationRep:
    (Original post by web-girl)
    I don't know? Its in numbers
    lol

    Posted from TSR Mobile
    • Community Assistant
    Offline

    18
    ReputationRep:
    Community Assistant
    (Original post by web-girl)
    I don't know? Its in numbers
    If there is a D at the top of the screen it is in degrees mode, if there is an R then it is in radians mode. I'm guessing your doing GCSE? so always keep it in degrees mode.
 
 
 
Poll
Do you think parents should charge rent?
Useful resources

Study tools

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.

Creating

Make study resources

Create all the resources you need to get the grades.

Planner

Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.

Papers

Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.