Post a New Question

Pre-Calc

posted by .

Consider a triangle ABC. C is a right angle, and side a is opposite angle A, side b is opposite angle B, and side c is the hypotenuse.
The measure of side a= 2, side b= 7, and side c= 7.3
How do you find the angle measure of A and B based on the lengths of the sides?


SinAngleB=7/7.3
so AngleB= arcsin 7/7.3

and AngleA=arcsin 2/7.3


Find f^-1(x). Give the domain of f^-1(x),including any restrictions "inherited" from f.

f(x)= 5x-2


We have to use a caluclator of trig table. We can only find the angles based on the sides for certain values. If you've just started trig you should cover these special values somewhere soon.
We know sin(A)=2/7.3 and cos(A)=7/7.3
A is approx. 15.95deg
We know sin(B)=7/7.3 and cos(B)=2/7.3
B is approx 74.05deg


weeeeeeeeeeeeeeeeeeeee

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. inverse trig functions

    evaluate the following expressions: tan(sec^-1(5/3)) tan(sec^-1(25/7)) cot(csc^-1(5/3)) i know the answers.. i jus don't know how to solve them =( PLEASE help me I assume your sec^-1 notation denot4es the arcsecant function, etc. sec^-1 …
  2. Angle question

    Quadrilateral JKLM is a rhombus. If mangleLMK = 36, find mangleKJM In the right triangle ABC, mangleB = 90, AB = 5, and AC= 12. Find BC. Round to the nearest tenth, if necessary. Help?
  3. math

    A right triangle has a hypotenuse of length 3.00 m, and one of its angles is 30.0°. What are the lengths of (a) the side opposite the 30.0° angle and (b) the side adjacent to the 30.0° angle?
  4. Trig

    If I have a triangle with the hypotenuse side as 7, and the opposite side as 3, how would I find the angle?
  5. trig

    Suppose the tangent of an acute angle in a right triangle is less than 1. How does the side opposite the angle compare to the side adjacent to the angle?
  6. trig

    use an inverse trig function to write è as a function of x (There is a right triangle. The hypotenuse is 2. è is the angle between the base and the hypotenuse. The base/adjacent side of è is (x + 1) The side opposite è does not …
  7. math

    Draw a big diagram You end up with a triangle with: the horizontal side = 47 ft the side representing the leaning pole ... call it a and the angle opposite the pole side = 51° The pole makes an angle of 7° with the vertical ... so …
  8. math problem

    In DABC, what could the 7 shown in the ratio sin A = 7/9 represent?
  9. physics

    A right triangle has a hypotenuse of length 2.00 m, and one of its angles is 24.0°. What are the lengths of the following sides?
  10. Math

    1. If Angle ABC is congruent to Angle DEF by side-side-side triangle congruence, the angle B is congruent to Angle E by?

More Similar Questions

Post a New Question