Posted by **Gregory ** on Tuesday, November 22, 2011 at 11:15am.

RST is a triangle with right angle S. If s- 21.3 Angstroms and t=8.71 Angstroms, find the measure of the larger acute angle.

- Trig/Math -
**Henry**, Thursday, November 24, 2011 at 12:17pm
t + r > s,

8.71 + r > 21.3,

r > 21.3 - 8.71,

r > 12.6.

Therefore, R is the larger acute angle.

cosR = t/s = 8.7 / 21.3 = 0.40845,

R = 65.9 Deg.

## Answer This Question

## Related Questions

- pre algebra - the measure of the angles of triangle RST are the ratio 2:3:5. ...
- Geometry - Write an indirect proof that an obtuse triangle does not have a right...
- Math - Triangle RST, RS = 30 centimeters, measure of angle T = 105, and measure ...
- Math - Show that a triangle with sides 3,4,5 inches long is a right triangle. ...
- Geometry/Trig. - For acute angle Aof a right triangle, find tan A by using the ...
- ALGEBRA 1 - If x and 3x-10 represent the measure of the acute angles of a right ...
- Geometry/Trig. - Let angle A be and acute angle in a right triangle. Approximate...
- biology - The length of DNA HELIX occupied by one nucleotide pair is 3.4 ...
- math - The sum of the measures of the three angles of any triangle is 180°. In ...
- trig - right triangle has an acute angle of 24.8 and an adjacent length of 145 ...

More Related Questions