Posted by starlight18 on Sunday, March 11, 2012 at 10:38am.
i have to use pythagorean theorem to find the legmeasure of x. in the formula, x would be a^2. the hypotenuse is 11 and "b" is unknown. there is also a cosine with a measure of .4 at the topmost angle.. what is x? i don't know how to use cosine with the problem

trig or geom  Steve, Sunday, March 11, 2012 at 1:24pm
Using the topmost angle, the cosine is
adjacent/hypotenuse
so .4 = b/11, making b=4.4
Now, with c=11,b=4.4, that means that
a^2 = 11^2  4.4^2 = 101.64, so
a = 10.1
Answer This Question
Related Questions
 Algebra  Hi. 1. I have a right triangle here. I know that I am to use the ...
 Algebra  Measure the height of your computer monitor to the nearest tenth of a ...
 Geometry/Algebra  The segments formed by the altitude to the hypotenuse of a ...
 MATH HELP PLEASE  Semester A Unit 4 Lesson 5: Cool Crafts Portfolio Template ...
 Math  How do I use pythagorean theorem if I already know what c is, but I am ...
 PreAlgebra (Pythagorean Theorem)  Russell Gossman is training for the Olympics...
 Unit 4 Lesson 5: Cool Crafts Portfolio  Choose a room you'd like to decorate: *...
 MATH :  Hey I know this is my fourth time posting this but, I have figured a ...
 Math  Hey I know this is my fourth time posting this but, I have figured a lot...
 Algebra 2 Honors  Hi, I'd like some help with one of the questions on my math ...
More Related Questions