Ask Experts Questions for FREE Help !
Ask
    amoori's Avatar
    amoori Posts: 1, Reputation: 1
    New Member
     
    #1

    Jul 8, 2012, 08:01 AM
    Trigonometry
    For the points A(3,0),B(5,2)and c(7,-2),calculate the angle BAC
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #2

    Jul 8, 2012, 08:56 AM
    Use your formulae. What do you get?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
     
    #3

    Jul 9, 2012, 04:21 AM
    Couple of ways to do this:

    a) you could apply the law of cosines, or
    b) you could find the difference of the slopes of the lines AB and AC, then take the arctangent of the result.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Trigonometry help! [ 3 Answers ]

If 3sinA+5cosA=5 show that 5sinA-3cosA=+-3

Please help (trigonometry) [ 1 Answers ]

sin4x + cos4x+ 2sinx cosx =1 how to solve it?

Trigonometry [ 3 Answers ]

Hi galactus how shoud I solve this :confused: sin^2 20=cos^2 20-cos^2 40

Trigonometry [ 3 Answers ]

In a 3cm, 4cm, 5cm triangle, find the size of the smallest angle correct to the nearest minute plzz help :confused: :confused:


View more questions Search