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.
Hiya!
The answer is: quadrilateral
Every side of a quadrilateral are parralle and has the same length.
A quadrilateral is a 2-dimensional closed shape with four straight sides.
Have a nice day
Answer:
4/21
Step-by-step explanation:
Multiply 1 and 4. Then multiply 3 and 7. So 1x4=4, and 3x7=21. Therefore, the answer is 4/21. In multiplying fractions, you just multiply straight across (: (Hope this helps)
The answer is C. is right
QUESTION 1
The given function is
We simplify to get;
This function is equal to zero when 
QUESTION 2
The given function is
We factor to get;
This function equals zero when
QUESTION 3
The given function is
We factor to get,
The function equals zero when 
Hence the equation has no real roots.
The complex roots are
or 
