Trigonometric functions which are related by having the same value at complementary angles are called cofunctions. Cofunctions of complementary angles are equal.
A. csc 20' = csc(90-70)=sec 70
B. cos 87' = cos (90-3)=sin 3'
C. csc 40' = csc(90-50) =sec50'
D. tan 15' = tan(90-75)= cot 75'
Among all the option c is not correct.
Option C is false.
Area = length · width
Area = 3ft · 2ft
Area = 6ft²
hope this helps!
The answer is (n+11)(n-4). You want to find what multiplies to make -44 and what adds to make 7.
769 rounded to nearest 100 = 800
359 rounded to nearest 100 = 400
309 rounded to nearest 100 = 300
800 + 400 + 300 = $1,500 estimated total cost
Please mark brainliest
H + c = 605
c = h + 55
h + h + 55 = 605
2h + 55 = 605
2h = 605 - 55
2h = 550
h = 550/2
h = 275 <== there were 275 hamburgers sold on Friday
c = h + 55
c = 275 + 55
C = 330...there were 330 cheeseburgers sold on Friday
