If 0 ≤ θ <2π, for what angles, θ, if any, is tan θ undefined?

If 0 ≤ θ <2π, for what angles, θ, if any, is tan θ undefined?

Trigonometry

If you are given 3 sides of a triangle, explain how you would find all three angles?

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I have a right triangle, but i only have the measures for its angles (90,60,30) Is there any way for me to find the length of one side

If sin(x) = 1/4 and x is in quadrantI,find the exact values of the expressions without solving for x. (a) sin(2x) (b) cos(2x) (c) tan(2x)

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i know that the answer is 1/4 but i dont know how they solved it

Hello! I am having some trouble verifying a trig identity sin(4x)=4cos^3(x)sin(x)-4sin^3(x)cos(x)

Trigonometry question

what is Tan(a)

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If tan x = 20/21 and π < x < 3π/2 what is sin(x + π/2)?

Find the area of triangle ABC to the nearest tenth if AB = 14 ft, BC = 10 ft, and ∠ABC = 74°.

use addition identity to find the exact value of sin 75°

(x2/16)+(y2/25)=1