Picture a triangle with hypotenuse 12 ft and "opposite side" 3 ft. Then the sine of the unknown angle is sin x = (3 ft) / (12 ft), or sin x = 1/4.
Apply the inverse sine function to determine the angle x.
Using my calculator, I got x= 0.253 radian. You could change this into degrees, if you wish, by mult. this result by (180 degrees) / (pi radians).
Answer:
11
Step-by-step explanation:
Given triangle ABC is right angled at C.
Therefore
A + B + 90 = 180
A + B = 180 - 90 = 90
B = 90 -A
Given
sin A = 2x + 5 ----------------------->A
cos B = 4x - 17 ----------------------->B
Also B = 90 - A
Substituting value of B in terms of A in equation B
we have
Cos 90 - A = 4x - 17 ( we know that cos(90-A) = sin A)
=>Sin A = 4x - 17 ----------------------->C
also it is given that sin A = 2x + 5
equating equation A and C we have
2x + 5 = 4x - 17
=> 4x - 2x = 5 + 17
=> 2x = 22
=> x = 22/2 = 11
X is 11
I started by using elimination to solve for x
3x + 9 = -3y became -2x - 2 = 0
-5x - 11 = 3y
then i soved for x
-2x = 2 x = 2/-2 x = -1
then i plug that back in for x and sove for y in one of the original equations
first equation
3(-1) + 9 = -3y 6 = -3y 6/-3 = y y = -2
second equation
3y = -5(-1) - 11 3y = -6 y = -6/3 y = -2
therefore your answers are x = -1 and y = -2
Answer:
Is it B
Step-by-step explanation:
Answer:
470 square units
Step-by-step explanation:
area of trapezoid is A=(a+b)*h/2
a and b are the bases