Is 6cos(θ)=6cos(-θ) ?

The answer to whether 6cos(θ)=6cos(-θ) is True

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prove 6cos(θ)=6cos(-θ)

prove

6 cos (θ) = 6 cos (- θ)

True

Solution steps

6 cos (θ) = 6 cos (- θ)

Manipulating left side

6 cos (θ)

Use the negative angle identity:

cos (- x) = cos (x)

= 6 cos (- θ)

We showed that the two sides could take the same form

\Rightarrow True

p ro v e \frac{( tan ( 2 x ) + cot ( 2 x ) )}{csc ( 2 x )} = sec (2 x)

p ro v e (cos (θ) - sin (θ))^{2} = 1

p ro v e cos (x) = 1 = cos (0) = 1

p ro v e (tan (x) + 1) (tan (x) - 1) = sec^{2} (x) - 2

p ro v e \frac{1}{csc ( x ) + 1} = \frac{1}{sin ( x ) + 1}