Answer:
A) 20°
Step-by-step explanation:
Sine and cosine are co-function complements which means that value of sine of an angle is equal to the value of cosine of the complementary angles.
This can be represented by:
Given statement:
Applying co-function complements
Since, we can represent 70° = 90°-20°
So
Thus, 
makes the statement true.
Answer:
a(n) = -81(-4/3)^(n - 1)
Step-by-step explanation:
The first term is -81. From -81 we obtain the next term, 108, by multiplying -81 by -4/3. Note how (-4/3)(108) = -144 as anticipated.
Thus, the common ratio is -4/3.
The explicit function for this geometric series is
a(n) = -81(-4/3)^(n - 1)
The answer is 90, 25, 155, 115 respectively
Answer:
y =x-12
Step-by-step explanation:
Equation of straight line is
