prove sin(x)=0

Solution

prove

sin (x) = 0

False

Solution steps

sin (x) = 0

Show that the two sides are not equal

For

sin (x) = 0

plug in

x = 1

sin (1) = 0.84147 \dots

sin (1)

Refine to a decimal form

= 0.84147 \dots

The two sides are not equal

\Rightarrow False

sin (x) = 1

sin (θ) tan (θ) = \frac{1 - cos ^{2} ( θ )}{cos ( θ )}

sin (x + 3 0^{\circ}) + 3 cos (x + 3 0^{\circ}) = 2 cos (x)

(sec (a) + tan (a)) (1 - sin (a)) = cos (a)

tan^{2} (a) + 1 = sec^{2} (a)