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TrigonometryQuestion and Answers: Page 10

Question Number 193533 Answers: 2 Comments: 0

If cot x−tan x=4 then cot^2 +(2/(sin 2x)) −tan^2 x =?

$If \cot x - \tan x = 4 then$ $\cot^{2} + \frac{2}{\sin 2 x} - \tan^{2} x = ?$

Question Number 193502 Answers: 2 Comments: 0

oolve cos 2x .tan (((7π)/(19)))=tan (((17π)/(23)))+tan (((6π)/(23)))+tan (((12π)/(19)))

$\underset{―}{o} olve$ $\cos 2 x . \tan (\frac{7 π}{19}) = \tan (\frac{17 π}{23}) + \tan (\frac{6 π}{23}) + \tan (\frac{12 π}{19})$

Question Number 193464 Answers: 1 Comments: 3

Question Number 193461 Answers: 2 Comments: 0

lim_(x→0) ((((√(1+sin x))−1)/(sin 2x))) = ??

$\lim_{x \to 0} (\frac{\sqrt{1 + \sin x} - 1}{\sin 2 x}) = ? ?$

Question Number 193458 Answers: 1 Comments: 1

lim_(x→0) (((1−cos(x))/(x sin(x)))) = ???

$\lim_{x \to 0} (\frac{1 - \cos (x)}{x \sin (x)}) = ? ? ?$

Question Number 193436 Answers: 1 Comments: 0

((sin(x+18^o ))/(sin(48^o )))=((sin(x))/(sin(18^o )))

$\frac{s i n (x + 18^{o})}{s i n (48^{o})} = \frac{s i n (x)}{s i n (18^{o})}$

Question Number 193423 Answers: 3 Comments: 0

when tan(θ/2)=(1/a) then find cosθ=? from the a

$when \tan \frac{θ}{2} = \frac{1}{a}$ $then find \cos θ = ? from the a$

Question Number 193399 Answers: 1 Comments: 0

Question Number 193390 Answers: 0 Comments: 0

A ship X sailing with a velocity (21 kmh 052⁰) observes a light from a lighthuse due North. The bearing of the liglhthouse from the ship 20 minutes later is found to be 312. calcuate correct to thre sigificant figures i) the orignal distance when the lighthoues is due West of the ship from the time when it is due North of the ship. ii) the time in minutes, when the lighthouse is due West of the ship from the time when it is due North of the ship. iii) the distance in km of the ship from then lighthoue when the lighthouse is due West of the ship

Question Number 193385 Answers: 1 Comments: 0