621/87 can anybody help me

Mathematics

2 answers:

Ilia_Sergeevich [38]4 years ago

5 0

Answer:

621/87=7.13793103448

Step-by-step explanation:

I divided it and got this answer

Artist 52 [7]4 years ago

3 0

Answer: 621 divided by 87 is 7 with the remainder of 12.

Step-by-step explanation:

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sin theta = x , sec theta =y . find cot theta pls answer fast i need to verify my answer . you can directly write the answer no

Snowcat [4.5K]

Answer:

$\huge\boxed{\cot\theta=\dfrac{1}{xy}}$

Step-by-step explanation:

$\bold{METHOD\ 1}$

$\sin\theta=x\\\\\sec\theta=y\\\\\cot\theta=?\\\\\text{We know:}\\\\\sec x=\dfrac{1}{\cos x};\ \cot x=\dfrac{\cos x}{\sin x}\\\\\sec\theta=y\to\dfrac{1}{\cos \theta}=y\to\dfrac{\cos\theta}{1}=\dfrac{1}{y}\to\cos\theta=\dfrac{1}{y}\\\\\cot \theta=\dfrac{\frac{1}{y}}{x}=\dfrac{1}{xy}$

$\bold{METHOD\ 2}$

$\text{We know}\\\\\tan x=\dfrac{\sin x}{\cos x}\\\\\cot x=\dfrac{\cos x}{\sin x}=\dfrac{1}{\tan x}\\\\\sec x=\dfrac{1}{\cos x}\\\\\text{therefore}\\\\(sin x)(\sec x)=(\sin x)\left(\dfrac{1}{\cos x}\right)=\dfrac{\sin x}{\cos x}=\tan x\\\\\dfrac{1}{(\sin x)(\sec x)}=\dfrac{1}{\tan x}=\cot x$