Which relationship in the triangle must be true?

sin (B) = sin (A)

sin (B) = cos (90 - B)

cos (B) = sin (180 - B)

cos (B) = cos (A)

The floor inside the horse barn is 45 feet long and 20 feet wide. The barn has 2 floors (an upstairs and downstairs) and both floors has the same size. What is the total area for both floors of the barn

What is the sum? 6x7 + 8x7 A. 14x7 B. -2x7 C. 14x 14 D. 48x 7

he two tables below show the amount of tip, y, included on a bill charging x dollars. A 2-column table with 3 rows titled Restaurant A. Column 1 is labeled x with entries 10, 20, 30. Column 2 is labeled y with entries 1, 2, 3.

Which answer shows the proper use of additive inverse's 2a+b + (-b) = 2a+0 2a+b=b+2a 2a+b+0=2a+b (2a) * b=2 (a*b)

A $10 bill is worth pennies?

How do you determine if a given set of measurements works for the side lengths of a triangle? (It should be a number)

If cosx = sin20, find the value of x, 0 Solve for x correct to the nearest minute given sin^2 x-3sin xcosx+2cos^2 x=0, where 0≤x≤180

What is 45 times 35 divided by 344

2/5k-3/5+1/10k simplify

A sling is being rotated at the rate of 99 rpm. Give each answer as an exact fraction. a) What will the length of the sling have to be so that the speed of the object at the end will be 53 meters per second? (in meters) meters