The ratio of the angles in a triangle is 1:2:5. Find the measures of each angle

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

How to use order of operation in 20 divide by 4 multiply 5 = 1