Saturday

April 19, 2014

April 19, 2014

Posted by **JerriAnne** on Tuesday, November 20, 2007 at 8:55pm.

Given a right triangle with B=4 and

C=11 find A appoximated to three decimal places.

- math-triangle help -
**Anonymous**, Tuesday, November 20, 2007 at 8:59pmUse the Pythagorean theorem, r^2 = y^2 + x^2

r^2

= 4^2 + 11^2

= 16 + 121

= 137

= Square root of 137

= 11.705

- math-triangle help -
**Kelly**, Wednesday, November 21, 2007 at 2:58pmThis is how I would do it.

Pythagorean theorem: a2 + b2 = c2.

a^2 + 4^2 = 11^2

a^2 +16 = 105

subtract both sides by 16

a^2 - 16 = 105 - 16

a^2 = 105

a = sqrt 105

a = 10.247

**Related Questions**

Trigonometry - In a right triangle ABC, C = 90°, B = 38° 35' and a = 6.434 mi. ...

Math - In a right triangle, find the length of the side not given. Approx to the...

math - given a right triangle ABC with the right angle at B find AB if AC = 25 ...

Math...Geometry - Hello, Can someone please tell me if I worked this out correct...

math - The vertices of a triangle are listed below. H(-2,4), I(22,4), J(10,-1) ...

basic geometry - the three verticies of a triangle can be found at the points A(...

Honors Geometry - In a proof, I am given that Triangle GCF is congruent to ...

5 Pre-Calculus Questions - 1. What is the value of x in the right triangle below...

Math - A triangle has 2 angles that measure 60 each. Which of the following best...

trig - Please answer b)only a) If a triangle has angles of 35 and 65 degrees, ...