Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
• tan²x + 1 = sec²x
⇒ tan²x - sec²x = - 1
Thus the derivative reduces to
( - 1 ) = 0
true
5x-8=37
5(9)-8=37
45-8=37
37=37
Axis 6
4.1
4.1.1 - 60°
4.1.2 - 140°