trig
posted by Abigail .
Please answer b)only
a) If a triangle has angles of 35 and 65 degrees, what is the measurment of the third angle? Is it a right triangle?
b)Find all angles of a right triangle triangle RST given that r = 18 cm and s = 20 cm

trig 
Reiny
see my reply below in
http://www.jiskha.com/display.cgi?id=1208400886 
trig 
bobpursley
yes, the sum of angles is 180 in triangle.
b. you know the third side (PYTH theorm). You can find angles from sin, cosine.
Respond to this Question
Similar Questions

basic geometric
a would like to get someone too help me with these math problem. Two angles of a triangle are 40 degrees and 62 degrees; what is the third angle's measur? 
Math  Geometry
Two right triangles are touching at the tips. The left triangle has the 90 degree angle to the bottom left, and 33 degrees on the bottom right. Based on this info, the other angle is 57 degrees. The right triangle has the right angle … 
trig
If a triangle has angles 35 and 65 degrees, what is the measurment of the third angle? 
trig
Find all angles of a right triangle triangle RST given that r = 18 cm and s = 20 cm 
Honors Geometry
In a proof, I am given that Triangle GCF is congruent to Triangle GKF is congruent to Triangle JHM. Triangle GCF and Triangle GKF are Vertical Angles. I am also given that Angle C(on Triangle GCF) is 4y, and Angle G(on Triangle GKF) … 
Geometry
Write an indirect proof that an obtuse triangle does not have a right angle. Given: Triangle RST is an obtuse triangle. Prove: Triangle RST does not have a right angle. Let angle S be an obtuse angle. Assume Triangle RST has a right … 
math (please help)!
Geometry ***(PLEASE CHECK MY ANSWER)*** 1. If triangle RST = triangle NPQ, which of the following is true? 
Math
Write whether the statement is true or false. If false write a true statement. 1. A right triangle has three right angles. False a right triangle has 1 right angle 2. A triangle that has three sides of the same length is an equilateral … 
Trig
An isosceles triangle has a height of 12.5 m (measured from the unequal side) and two equal angles that measure 55°. Determine the area of the triangle. Split in half the triangle is a right triangle, so it's three angles are 90%, … 
Math
Triangle ABC has angles measuring 137°, 15°, and 28°. Classify the triangle by its angle measures. right triangle acute triangle obtuse triangle multiangular triangle I thinks it's c