Step-by-step explanation:
15. If A and B are complementary angles, then sin A = cos B and cos A = sin B.
So if sin A = m, then cos B = m.
16. If sin A = cos B, or cos A = sin B, and A and B are acute, then A and B are complementary.
a. cos 60° = sin θ
60° + θ = 90°
θ = 30°
b. sin 71° = cos θ
71° + θ = 90°
θ = 19°
c. sin θ = cos (θ + 20°)
θ + θ + 20° = 90°
2θ = 70°
θ = 35°
d. sin (θ − 60°) = cos θ
θ + θ − 60° = 90°
2θ = 150°
θ = 75°
-5 + x = 7 1/3
X = 7 1/3 + 5
X = 12 1/3
Answer:
-21=24
Step-by-step explanation:
Subtract 24 from 3
-21=8+2^2
Raise 4 to the power of 2
-21=8+16
Add 8 and 16
-21=24
Answer:
The intercepts 
Step-by-step explanation:
Given:
Required
Determine the intercepts
The equation is a linear equation and the intercepts of the equation is calculated as thus;
For x intercepts; substitute 0 for y
Add 1 to both sides
Divide both sides by 4
Simplify fraction to lowest term
For y intercept, substitute 0 for x
Subtract 5 from both sides
Divide both sides by 3
Reorder
Hence, the intercepts
Answer:
223
Step-by-step explanation:
hope it helps!!!!......
