# Minh

Popular questions and responses by Minh
1. ## trig

A tree casts a shadow 50 yards long when the angle of the sun (measured from the horizon) is 30 degree. How tall is the tree in feet? (A) 150p3 (B) 50p3 (C) 150 (D) 75p3 (E) None of the above.

2. ## Biotechnology

Consider the titration of 25.0 mL of 0.050 0 M Sn2+ with 0.100 M Fe3+ in 1 M HCl to give Fe2+ and Sn4+, using Pt and calomel electrodes. (a) Write a balanced titration reaction. (b) Write two half-reactions for the indicator electrode. (c) Write two Nernst

3. ## social studies

what is the process by which people from foreign countries became U.S. citizens

4. ## english

can you help me fill in each blank with a word about Money Problem

5. ## trig

if sec theta=-5/4 and 180degree < theta< 270degree, find tan theta a.-3/5 b 4/5 c.3/4 d.3/5

6. ## trig

1st-the reason i keep change my name because some of my friends are using my computer by their own name to asked questions. we are having a hard time solving each trig problems 2nd- if sin theta=0.6 and 90 degree

7. ## trig

A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the area of T? (A) 50p3/(1 +p3) (B) 10p3/(1 +p3) (C) 50/(3 + 3p3) (D) 10/(3 + 3p3)(E) None of the

8. ## trig

A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the radian measure of the angle at R? (A) 5pi/24 (B) 5/24 (C) 5pi/12 (D) 5/12 (E) None of the

9. ## trig

Find the numerical value of cos(60degree) + cot(30degree): (A) 1/2 (B) 3p3/2 (C) 12 +p3 (D) 52p3 (E) None of the above.

10. ## trig

The hypotenuse of a right triangle has length 8 and one of the other edges has length 3. What is the sine of the angle opposite the edge of length 3? (A) 3/p55 (B) 3/8 (C)p55/8 (D) 55/64 (E) None of the above.

11. ## trig

Determine the value of cos(theta) given that cos(pi âˆ’ theta) = .2 (A) p.96 (B) .2 (C) âˆ’.2 (D) âˆ’p.96 (E) None of the above.

12. ## trig

Find the sum of all of the solutions to the equation cos(2x) âˆ’ sin2(x) âˆ’ 1 = 0 in theinterval 0 < x < 5 pi. (Use radian measure for x.) (A) 15pi (B) 0 (C) pi (D) 10pi (E) None of the above.

13. ## trig

2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc intercepted by a central angle of 100 degree. (A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above.

1. ## Chemistry

K2CrO4=2*39.10g+52.00g+16.00g*4=194.20g

posted on March 11, 2018
2. ## Chem

B) = 3SiH4(g) + 4NH3(g)= SiN4(g) + 12N2 3: 1: 12= ratio 3= 3.125 1= 1.042 12= 12.5

posted on March 31, 2017
3. ## grammar

Sam was riding his bike

posted on December 28, 2016
4. ## Physics

F=MA> sqrt(2AX) distance is X

posted on November 26, 2015
5. ## physics

F=MA> sqrt(2AX) distance is X

posted on November 26, 2015
6. ## Physics

F=MA> sqrt(2AX) distance is X

posted on November 26, 2015
7. ## Physics

F=MA> sqrt(2AX) distance is X

posted on November 26, 2015
8. ## scoials

They help

posted on October 31, 2014