Aladder rests against a vertical wall at an inclination alfa to the horizontal. it's foot is pulled away from the wall through distance p so that its upper end sides a distance q down the wall and then the ladder makes an angle bita to the horizontal, show that p/q=cos bita-cos alfa/sin alfa-sin bita

I assume you have a drawing of this problem. If not, then draw it this way.

Draw a vertical segment on the left side of the paper. Starting at the lower endpoint, draw a horizontal segment to the right. You now have the wall and the floor. Now draw a slant segment connecting the two segments. This is the ladder. Mark the lower right acute angle alpha. Now using the same length segment, draw a new segment connecting the perpendicular ones a little lower on the wall than the previous one. It will end up on the floor to the right of the previous one. Label the distance between the segments on the wall q and the distance between the endpoints of the slant segments on the floor p. Now label the distance from the lower endpoint on the wall to the floor r, and the distance from the left endpoint on the wall to the wall s. The length of both slant segments is t.

We need to use sines and cosines to find expressions for p and q.

We'll start with sine and q.

Now we subtract the expression for r from the expression for q + r.

We have an expression for q in terms of the length of the ladder, t, and the angles alpha and beta.

Now we work on p by using the cosine of the angles.

Now we subtract the expression for s from the expression for p + s.

Now we have an expression for p in terms of t and the angles alpha and beta.

To find the ratio of p to q, we divide their expressions.

Cancel out t to get:

answer: get jesus in your life

step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.