Prove that: cot(^2) x- csc x/csc(^2) x
= cos(^2) x- sin x

Solution:

Given that we have to prove:

Take the L.H.S of above

Simplify

We know that,

Therefore,

Also we know that,

Thus we get,

Thus,

L.H.S = R.H.S

Thus proved

answer: 0.95, d

step-by-step explanation:

first, you have to combine the percentages of costumers ordering pizza or salad. 25% (percent of salads ordered) plus 70% (percent of pizzas ordered) is equal to 95%. then, turn 95% into a fraction: 95/100. lastly, divide 95 by 100 and you will get 0.95, d.

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation: