Without a calculator
sec 27° csc 63° - tan 27° cot 63º.

0.999999999999997995117350573559

Step-by-step explanation:

Evaluate trigonometric functions in the problem

1.12232623763436⋅1.12232623763436−0.509525449494429⋅0.509525449494429

Multiply 1.12232623763436 and 1.12232623763436 to get 1.2596161836824979128090526096.

1.2596161836824979128090526096−0.509525449494429×0.509525449494429≈1

Multiply 0.509525449494429 and 0.509525449494429 to get 0.259616183682499917691702036041.

1.2596161836824979128090526096−0.259616183682499917691702036041≈1

Subtract 0.259616183682499917691702036041 from 1.2596161836824979128090526096 to get 0.999999999999997995117350573559.

0.999999999999997995117350573559

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

ask for details followreport by buttfacelily 2 minutes ago

answers

rauschg

rauschg · hand

know the answer? add it here!

step-by-step explanation:

what i would say the best answer is a. 40.5