Solving Trigonometry Equations and Problems with Examples and Tips

How is $\cos (- x) = \cos x$ ?

sendetimejhn 2022-12-07

Which of the folloiwng sets of angles can form a triangle?
A. $90^{\circ}, 30^{\circ}, 90^{\circ}$
B. $70^{\circ}, 70^{\circ}, 70^{\circ}$
C. $30^{\circ}, 20^{\circ}, 110^{\circ}$
D. $80^{\circ}, 40^{\circ}, 60^{\circ}$

nageljnovs6x 2022-12-07

If the sum of the measures of two angles is 90 degrees, then what are they called?
A.Complementary Angles
B.Right Angles
C.Supplementary Angles
D.Adjacant Angles

armlanna1sK 2022-12-01

Solve $y = \tan (\frac{π}{3}) y^{'} =$

cdcamandokwd 2022-12-01

What is the exact value of $\sec (\frac{π}{4})$ ?

zweifelndcuv 2022-12-01

What is the derivative of $\sin^{2} (x)$ ?

avhendast7x2 2022-11-30

Find the value of cos $210^{\circ}$

gheadarce 2022-11-30

Calculate the following real number:
$\sin 9 °$

agrarismoN07 2022-11-30

Pick the right answer.
What expression is the same as $\sin (0.6 x) - \sin (0.4 x)$ ?
A. $2 \cos (0.5 x) \sin (0.1 x)$
B. $2 \cos (0.5 x) \cos (0.1 x)$
C. $2 \sin (0.5 x) \sin (0.1 x)$
D. $- 2 \sin (0.5 x) \sin (0.1 x)$
E. $- 2 \cos (0.5 x) \sin (0.1 x)$

hEorpaigh3tR 2022-11-30

Modify $3 : 20$ into percent

tac62txC 2022-11-30

Check whether (6,8,10) is a Pythagorean triplet.

phumzaRdY 2022-11-30

What is the square root of $3600$

hemotropS7A 2022-11-29

When $\sin x = 1$ , what does x equal?

quakbIi 2022-11-28

What is the value of cos $(2 π / 3)$

funnyantyLEy 2022-11-28

Pitch of sound is determined by its...
frequency
amplitude
speed
loudness

Jaden Bird 2022-11-28

$\frac{1 - \cos (x)}{x}$ herefore, the limit is

riwayatcbt 2022-11-27

Find all values for cos(i)
In my Differential Equations class recently we have learned about Euler's Formula and Fourier Series. I am given the problem Find all values for $\cos (i)$ where $i = \sqrt{(- 1)}$ . There is a long list of similar problems, but I figure if I can get some help on one of them I can learn to do the rest.
If possible, could an answer show me not all the work, but maybe just show me where to start? I want to learn how to get the answers myself, not just be given answers.

Amina Wilkinson 2022-11-26

What is zero zeros? What are no nothings?

cyflasaufMh 2022-11-26

Proving that it's impossible to prove irrationality of all real numbers.

chiodaiokaC 2022-11-26

How do I differentiate $\sin^{2} x$ ?
I thought that because this is true:
$\sin^{2} x = (\sin x)^{2},$
I could differentiate the expression like this:
$\frac{d}{d x} \sin^{2} x = 2 \cos x .$
But I am supposed to get
$\sin (2 x) or 2 \sin x \cos x .$
Why am I wrong?

The majority of Trigonometry Math problems are quite easy to solve when you have the list of answers that help you see the logic and reasoning. Looking at various examples will help you to see how certain questions are related to provided solutions.

Remember that Trigonometry requires patience and analysis. By following your analysis skills, you will help yourself find the answers. If something remains unclear, start with your exploration of examples again and go step-by-step.

Precalculus

Practice Exercises for Trigonometry