👉 Try now NerdPal! Our new math app on iOS and Android

Solve the equation $\cos\left(135\right)=4\cos\left(\right)$

Step-by-step Solution

Go!
Math mode
Text mode
Go!
1
2
3
4
5
6
7
8
9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2

e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch
Solving: $\cos\left(135\right)=4\cos\left(\right)$

Final Answer

false

Step-by-step Solution

Specify the solving method

1

The cosine of $135$ equals $-\frac{\sqrt{2}}{2}$

$-\frac{\sqrt{2}}{2}=4\cos\left(\right)$

Learn how to solve trigonometric equations problems step by step online.

$-\frac{\sqrt{2}}{2}=4\cos\left(\right)$

Unlock unlimited step-by-step solutions and much more!

Unlock the first 2 steps of this solution.

Learn how to solve trigonometric equations problems step by step online. Solve the equation cos(135)=4cos(). The cosine of 135 equals -\frac{\sqrt{2}}{2}. The cosine of 315 equals \frac{\sqrt{2}}{2}. Multiply -3 times \frac{\sqrt{2}}{2}. Subtract the values 45 and -2.121321.

Final Answer

false

Explore different ways to solve this problem

Solving a math problem using different methods is important because it enhances understanding, encourages critical thinking, allows for multiple solutions, and develops problem-solving strategies. Read more

Find the discriminant

Give us your feedback!

Function Plot

Main Topic: Trigonometric Equations

A trigonometric equation is an equation in which one or more trigonometric ratios appear.

Your Math & Physics Tutor. Powered by AI

Available 24/7, 365.

Complete step-by-step math solutions. No ads.

Includes multiple solving methods.

Support for more than 100 math topics.

Premium features on our iOS and Android app.

Join 500k+ students in problem solving.

Subscription plan. Cancel anytime.
Have a promo code?
Pay $39.97 USD securely with your payment method.
Please hold while your payment is being processed.
Create an Account
3-Month Special Plan
One-time payment of $2.97 USD.
Without automatic renewal.
Create an Account