vipinthakurjnp
vipinthakurjnp
01-09-2020
Mathematics
contestada
plz solve this question immediately
Respuesta :
bfranky43
bfranky43
01-09-2020
squaring both sides
squaring both sides
cos2+sin2+2cossin=1
cos
2
A
+
sin
2
A
+
2
cos
A
sin
A
=
1
⟹1+2cossin=1⟹2cossin=0
⟹
1
+
2
cos
A
sin
A
=
1
⟹
2
cos
A
sin
A
=
0
⟹−2cossin=0⟹1−2cossin=1
⟹
−
2
cos
A
sin
A
=
0
⟹
1
−
2
cos
A
sin
A
=
1
⟹cos2+sin2−2cossin=1
⟹
cos
2
A
+
sin
2
A
−
2
cos
A
sin
A
=
1
⟹(cos−sin2)=1
⟹
(
cos
A
−
sin
A
2
)
=
1
⟹cos−sin=±1
Answer Link
VER TODAS LAS RESPUESTAS ( 22+ )
Otras preguntas
An architectural company is trying to test the effectiveness of its promotional activity by looking at how many designs for new buildings it sells each year. Ye
subtract 3x^2 7x-43x 2 7x−43, x, squared, plus, 7, x, minus, 4 from 8x^2-6x 28x 2 −6x 28, x, squared, minus, 6, x, plus, 2.
100 points, The National Park Service sometimes creates controlled burns to mitigate wildfires. How does a controlled burn limit the spread of wildfires?(1 poi
an atom total number of electrons gives its
If m∠j=91 m∠l=16 and m∠k=73 list the sides of ∆JLK in order from smallest to largest
!! do any of you guys stan loona
what were the bill of rights?
the nurse is admitting a client who just had a bronchoscopy. which assessment should be the nurse's priority?
A kayaker needs to paddle north across a 100-m-wide harbor. The tide is going out, creating a tidal current that flows to the east at 2.0 m/s The kayaker can pa
a client who is in the first trimester is being discharged after a week of hospitalization for hyperemesis gravidarum. she is to be maintained at home with rehy
