Precalculus Solutions | Expert Assistance for Problems & Examples

Precalculus problems and solutions are hard to find online even though this topic is quite popular among college students majoring in Engineering. Keeping this fact in mind, we decided to provide you with a list of questions and answers that will help you with various precalculus problems. Regardless if it is related to equations or any other problem, these precalculus problems and composite functions examples and solutions below will help you see the logic and compare solutions as you check your original task.

Precalculus

What is meant by F+V=E+2 ?

Seventy eight and two hundred seventeen thousandths can be written as:
A) 78.217
B) 78.201
C) 7.217
D) 78.217

How to prove $\cos (\frac{2 π}{3})$ ?

How to calculate $\sin (- 150 °)$ ?

How to show that the point (7/25, 24/25) is on the unit circle?

What is the terminal point of a vector?

How to find the value of $\tan 240 °$ ?

Write the complex number $8 (\cos 30 + i \sin 30)$ in standard form?

The measure of an angle is five times its complement. The angle measures
(a) $25^{\circ}$
b) $35^{\circ}$
c) $65^{\circ}$
d) $75^{\circ}$

The number of solutions of $\cos (2 θ) = \sin (θ)$ in $(0, 2 π)$ is...

When light enters from air to glass the angle of incidence and refraction in air and glass are 45° and 30° respectively. Find the refractive index of glass.

How to find the value of $\sin (- 120)$ ?

$P_{1} (x) = 3 x^{2} + 10 x + 8 P_{2} (x) = x^{3} + x^{2} + 2 x + t$
are two polynomials.
When one of the factors of $P_{1} (x)$ divides $P_{2} (x)$ , 2 is the remainder obtained.
That factor is also a factor of the polynomial $P_{3} (x) = 2 (x + 2)$
Find the value of ‘t’.

The value of the expression $(\tan^{4} x + 2 \tan^{2} x + 1) \cos^{2} x$ , when $x = \frac{π}{12}$ is equal to
$A) 4 (2 - \sqrt{3}); B) 4 (\sqrt{2} + 1); C) 16 \cos^{2} \frac{π}{12}; D) 16 \sin^{2} \frac{π}{12}$

How to find the value of $\cos (- 90)$ ?

What is sin and cos if tan = 1/2 and sin>0?

The possibility of something happening or not happening is called probability. True or False

What are the inflections points of $y = e^{2 x} - e^{x}$ ?

What is the value of Sin42

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