vipinthakurjnp vipinthakurjnp
  • 01-09-2020
  • Mathematics
contestada

plz solve this question immediately​

plz solve this question immediately class=

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

Otras preguntas

Select the correct answer. Is this a SENTENCE? All the letters were destroyed. OA. Yes OB. No
Please answer it correctly and I'll mark it​
PLEASE HELP ASAP! Investigators plan to move some evidence from the crime scene. What should be done for this to happen correctly?A. Family members must be offe
Subject: Science Help is appreciated! No links pls! Will mark brianliest if correct! Thxs! :D Which of these is NOT an influence on climate? A. large bodies o
Hhelp me guys pleaseadvance thank you ^^​
According to you,what should be done to modernize and commercialize agriculture in nepal?​
f(x)=4x^3+3x-2 and g(x)=2x+2 what is the value of f(x)=g(x)?
Select the correct answer. What is the end behavior of the radical function represented by this graph? A. As [tex]x[/tex] decreases in value, [tex]f(x)[/tex] in
VERY IMPORTANT QUESTION PLEASE SOLVE IT;(:(:(​
very important question please solve it;(​