# Posts by Cyndy

Total # Posts: 19

**Chemistry**

how many grams of ammonium chloride are needed to raise the ammonia level 5 ppm in a 300 gallon system?

**Trigonometry**

Find the exact value of sin (195degrees)

**Trigonometry**

write sin(125degrees) in terms of its cofunction. Make sure your answer is a function of a positive angle.

**Trigonometry**

Write cos(-83degrees) as a function of a positive angle

**Trigonometry**

Write cos (lambda + pi/3) as a function of lambda only.

**Trigonometry**

Write tan(pi/4 - Beta) as a function of Beta only.

**Trigonometry**

Find the counterexample to shows that the equation sec (alpha) - cos (alpha) = sin (alpha) sec (alpha) is not an identity. Please explain.

**Trigonometry**

A 175-pound force and a 230-pound force are acting on the same point in directions that differ by 42°. What is the angle that the resultant makes with the 175-pound force? A. 22° B. 24° C. 32° D. 18°

**Trigonometry**

An airplane is flying on a heading of 115° with a constant velocity of 675 mph. How far south will it travel in 2 hours if it continues to maintain its velocity? A. 290 miles B. 570 miles C. 310 miles D. 610 miles

**Trigonometry**

A hill in Colorado makes an angle of 15.0° with the horizontal and has a building at the top. At a point 75.0 feet down the hill from the base of the building, the angle of elevation to the top of the building is 55.0°. What is the height of the building? A. 84.0 feet ...

**Trigonometry**

what is the amplitude of y=1/5sin(sqr root5x + 1/sqrroot5)?

**Trigonometry**

How many solutions does the system {y=x, y=tanx have?

**Trigonometry**

what is the frequency of y=tan(Pi/3 x)?

**Calculus**

what is the derivative of y=ã(3x)

**Trigonometry**

In a right triangle with ã the right angle, b = 86.5 and c = 125.8. What is â

**ict**

HARD COPY

**Calculus**

On an 18-hole golf course, there are par-3 holes, par-4 holes and par-5 holes. A golfer shoots a par of 70 for the 18 holes. There are twice as many par-4 holes as par-5 holes. How many of each type of hole are there on the golf course?

**english**

Ship is to trip as shout is to _________

**Language**

Ship is to trip as shout is to ____