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TrigonometryQuestion and Answers: Page 7

Question Number 199718 Answers: 1 Comments: 0

{ ((cos x+cos y=(1/2))),((sin x+sin y=(1/4))),((sin 2x + sin 2y=−((27)/(20)))) :} sin (x+y) = ...

${\begin{cases} \cos x + \cos y = \frac{1}{2} \\ \sin x + \sin y = \frac{1}{4} \\ \sin 2 x + \sin 2 y = - \frac{27}{20} \end{cases}$ $\sin (x + y) = . . .$

Question Number 199669 Answers: 0 Comments: 0

Question Number 199544 Answers: 1 Comments: 2

((Area(ydllow))/(Area(Blue)))=?

$\frac{Area (y d l l o w)}{Area (B l u e)} = ?$

Question Number 199480 Answers: 0 Comments: 1

Question Number 199481 Answers: 1 Comments: 0

Give △ABC is acute triangle. M is a midpoint of BC Prove that AB+AC>2AM

$G i v e △ A B C i s a c u t e t r i a n g l e .$ $M i s a m i d p o i n t o f B C$ $P r o v e t h a t A B + A C > 2 A M$

Question Number 199424 Answers: 1 Comments: 0

$x$

Question Number 199374 Answers: 3 Comments: 3

Question Number 199371 Answers: 0 Comments: 1

Question Number 199177 Answers: 1 Comments: 1

Question Number 199005 Answers: 0 Comments: 4

Question Number 198907 Answers: 0 Comments: 2

find the Area betwen Circle 1 and Circle2.

$find the Area betwen Circle 1 and$ $Circle 2 .$

Question Number 198900 Answers: 0 Comments: 0

((2sin2°+4sin4°+...+180sin180°)/(90))=? calculate.help me pleas.

$\frac{2 s i n 2 ° + 4 s i n 4 ° + . . . + 180 s i n 180 °}{90} = ?$ $c a l c u l a t e . h e l p m e p l e a s .$

Question Number 198828 Answers: 1 Comments: 1

Show that: Area(blue circle)=Area(Green circle)

$Show th a t :$ $A r e a (b l u e c i r c l e) = A r e a (G r e e n c i r c l e)$

Question Number 198815 Answers: 0 Comments: 3

Determiner x

$Determiner x$

Question Number 198761 Answers: 0 Comments: 0

Question Number 198477 Answers: 1 Comments: 2

find the Area (ABCD)

$find the Area (ABCD)$

Question Number 198423 Answers: 2 Comments: 0

show that ((1+sin∅)/(cos∅)) =((cos∅)/(1−sin∅)) Pls help

$show that$ $\frac{1 + \sin \emptyset}{\cos \emptyset} = \frac{\cos \emptyset}{1 - \sin \emptyset}$ $Pls help$

Question Number 198357 Answers: 0 Comments: 0

let a∈R, z∈C resolve (z+1)^n =e^(iπna) deduce that P_n =Π_(k=0) ^(n−1) sin(a+((kπ)/n))

$l e t a \in R, z \in C$ $r e s o l v e$ ${(z + 1)}^{n} = e^{i π n a}$ $d e d u c e t h a t P_{n} = \underset{k = 0}{\prod^{n - 1}} s i n (a + \frac{k π}{n})$

Question Number 197937 Answers: 1 Comments: 0

(√3) sin^2 θ∙tanβ+cos^2 β=?

$\sqrt{3} {s i n}^{2} θ \cdot t a n β + {c o s}^{2} β = ?$

Question Number 197914 Answers: 1 Comments: 3

Determiner la surface hachuree (voir figure) BC=10cm ∡B=45° ∡C=30°

$Determiner la surface hachuree$ $(voir figure)$ $BC = 10 cm ∡ B = 45 ° ∡ C = 30 °$

Question Number 197908 Answers: 1 Comments: 0

sin18^° =?

$s i n 18^{°} = ?$

Question Number 197881 Answers: 1 Comments: 1

Question Number 197850 Answers: 1 Comments: 0

Solve the equation: (2sin x − 1)(2cos 2x + 2sin x +1) = 3(1−2cos 2x)

$S o l v e t h e e q u a t i o n :$ $(2 s i n x - 1) (2 c o s 2 x + 2 s i n x + 1) = 3 (1 - 2 c o s 2 x)$

Question Number 197848 Answers: 4 Comments: 0

Question Number 197795 Answers: 2 Comments: 0

Question Number 197719 Answers: 0 Comments: 3

Determiner x

$Determiner x$

Pg 2 Pg 3 Pg 4 Pg 5 Pg 6 Pg 7 Pg 8 Pg 9 Pg 10 Pg 11

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