Calculation: 6 cos · (9 Pai / 4) · Tan ((- 11 / 6) · PAI)

Calculation: 6 cos · (9 Pai / 4) · Tan ((- 11 / 6) · PAI)

The original formula = 6cos (2 π + π / 4) × Tan (- 2 π + π / 6)
=6×√2/2×√3
=3√6

Do not use calculator to judge whether Tan (- 11 π / 6) is positive or negative? Use the method of judging quadrant

-11π/6=-2π+π/6
ν - 11 π / 6 is the first quadrant angle
The tan (- 11 π / 6) is positive

Calculation of sin (3 π / 11) + 1 To solve and answer

4sin (2 π / 11) + Tan (3 π / 11) = radical 11
The proof process is shown in the figure

If Tan (α + π / 6) = 3, then Tan (α + 5 π / 12) is equal to?

tan（α＋5π/12）
=tan[（α＋π/6)+π/4]
=[tan（α＋π/6)+tan(π/4)]/[1-tan（α＋π/6)tan(π/4)]
=(3+1)/(1-3)
=4/(-2)
=-2

How many degrees of Tan is 12 of 5

α≈22.6°.
6 ≈ 5 / 12

What is Tan (- 25 pails / 12)?

tan(－25π/12)=－tan(25π/12)=－tan(π/12)
Because Tan (A / 2) = Sina / (1 + COSA), then Tan (π / 12) = sin (π / 6) / [1 + cos (π / 6)] = (1 / 2) / [1 + (√ 3 / 2)] = 2 - √ 3
Then: Tan (- 25 π / 12) = √ 3-2

What is Tan ^ 2 (π - a) equal to? What about Tan ^ 3 (π - a)?, For the trigonometric function with index greater than one, how to judge the sign when using the induction formula? Is it judged once first, and then judge the whole according to the power? How to judge the sign of trigonometric function whose exponent is greater than one,

Yes, you are right. First look at your own, then look at the power

How many degrees is Tan equal to 2?

sixty-three point four three four nine four

How many degrees and minutes of Tan is equal to 1.25/6?

Tan 11 degrees 46 minutes equals 1.25/6

Given sin α = - 8 / 17, find the values of cos α and Tan α

Cosa = (+ / -) radical [1-64 / 289] = (+ / -) 15 / 17
tana=sina/cosa=(-/+)8/15