Is 3sin(2x-15)=cos(2x-15) ?

The answer to whether 3sin(2x-15)=cos(2x-15) is False

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

prove 3sin(2x-15)=cos(2x-15)

prove

3 sin (2 x - 15) = cos (2 x - 15)

False

Solution steps

3 sin (2 x - 15) = cos (2 x - 15)

Show that the two sides are not equal

For

3 sin (2 x - 15) = cos (2 x - 15)

plug in

x = 0

3 sin (2 \cdot 0 - 15) = - 1.95086 \dots

3 sin (2 \cdot 0 - 15)

Refine to a decimal form

= - 1.95086 \dots

cos (2 \cdot 0 - 15) = - 0.75968 \dots

cos (2 \cdot 0 - 15)

Refine to a decimal form

= - 0.75968 \dots

The two sides are not equal

\Rightarrow False

cos^{2} (x) - 2 sin^{2} (x) = 3 cos^{2} (x) - 2

\frac{1 + cos ( 2 x )}{sec ^{2} ( x )} = 2 cos^{4} (x)

sin (x) sec (x) cot (x) = cot (x)

sin (\frac{7 π}{4}) = sin (\frac{- π}{4})

cos (π - θ) = cos (θ)

Is 3sin(2x-15)=cos(2x-15) ?
The answer to whether 3sin(2x-15)=cos(2x-15) is False