Is sec(x)cot(x)sin(x)=1 ?

The answer to whether sec(x)cot(x)sin(x)=1 is True

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prove sec(x)cot(x)sin(x)=1

prove

sec (x) cot (x) sin (x) = 1

True

Solution steps

sec (x) cot (x) sin (x) = 1

Manipulating left side

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

Express with sin, cos

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

Use the basic trigonometric identity:

cot (x) = \frac{cos ( x )}{sin ( x )}

= \frac{cos ( x )}{sin ( x )} sec (x) sin (x)

Use the basic trigonometric identity:

sec (x) = \frac{1}{cos ( x )}

= \frac{cos ( x )}{sin ( x )} \cdot \frac{1}{cos ( x )} sin (x)

\frac{cos ( x )}{sin ( x )} \cdot \frac{1}{cos ( x )} sin (x) = 1

\frac{cos ( x )}{sin ( x )} \cdot \frac{1}{cos ( x )} sin (x)

Multiply fractions:

a \cdot \frac{b}{c} \cdot \frac{d}{e} = \frac{a \cdot b \cdot d}{c \cdot e}

= \frac{cos ( x ) \cdot 1 \cdot sin ( x )}{sin ( x ) cos ( x )}

Cancel the common factor:

cos (x)

= \frac{1 \cdot sin ( x )}{sin ( x )}

Cancel the common factor:

sin (x)

= 1

= 1

= 1

We showed that the two sides could take the same form

\Rightarrow True

- sec (x) sin (x) = - tan (x)

\frac{sin ( 3 x )}{sin ( 2 x )} = 2 cos (x) - \frac{1}{2} sec (x)

\frac{1}{cos ( - x )} - tan (- x) sin (- x) = cos (x)

cos (1 5^{\circ}) = cos (4 5^{\circ} - 3 0^{\circ})

1 - csc^{2} (x) = - cot^{2} (x)