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 ( 11+ )
Otras preguntas
Find the value of θ that makes each statement true. a) sin θ = cos(30°) b) sin 80° = cos θ c) cos(θ + 15°) = sin(θ) d) sin(θ + 38) = cos θ e) cos θ = sin(θ – 30
A bucket contains 50 lottery balls numbered 1-50. One is drawn at random. Find each probability. P(at least 20 | prime number)
Chasteen, Inc., is considering an investment with an initial cost of $145,000. The cash inflows generated by the project are estimated at $76,000 for the first
[04/04, 13:08] Apostle ELIJAH Ben: *PROBLEM OF THE DAY* Some birds were flying and met a bird on their way. The bird greeted them; hello hundred! They said we
Select all the offspring phenotypes that could be produced from a BbEE x bbee cross (shown above). black fur, red eyes black fur, black eyes white fur, black ey
Give the solutions to 23 + √36
what memory did the giver ask jonas to take from him
Take notes on the injustice that existed. For example, for the chapter on women's suffrage, what was life like for women in the 1800's and early 1900's?
g The tangent plane to z=f(x,y) at the point (1,2) is z=5x+2y−10. (a) Find fx(1,2) and fy(1,2). fx(1,2)= Number fy(1,2)= Number (b) What is f(1,2)? f(1,2)= Numb
The Triangular Trade benefited the Southern Colonies by: A. Allowing England to establish colonies in Africa incorrect answer. B. Reducing the travel time betwe
