What is the value of tan(180)-2cos(180)+3csc(270)+sin(90) ?

The value of tan(180)-2cos(180)+3csc(270)+sin(90) is 0

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tan(180)-2cos(180)+3csc(270)+sin(90)

tan (18 0^{\circ}) - 2 cos (18 0^{\circ}) + 3 csc (27 0^{\circ}) + sin (9 0^{\circ})

0

Solution steps

tan (18 0^{\circ}) - 2 cos (18 0^{\circ}) + 3 csc (27 0^{\circ}) + sin (9 0^{\circ})

Use the following trivial identity:

tan (18 0^{\circ}) = 0

Use the following trivial identity:

cos (18 0^{\circ}) = (- 1)

Rewrite using trig identities:

csc (27 0^{\circ}) = - 1

Use the following trivial identity:

sin (9 0^{\circ}) = 1

= 0 - 2 (- 1) + 3 (- 1) + 1

Simplify

= 0

sin (20 5^{\circ})

\frac{7}{tan ( 3 0 ^{\circ} )}

sin (14 π)

cos (arctan (\frac{3}{2}))

cot (arcsin (\frac{2}{3}))

What is the value of tan(180)-2cos(180)+3csc(270)+sin(90) ?
The value of tan(180)-2cos(180)+3csc(270)+sin(90) is 0