Bora77idn
Answered

Find the best solutions to your problems with the help of IDNLearn.com. Ask anything and receive prompt, well-informed answers from our community of experienced experts.



it's a prove that...

2sin70.cos20=sin90+sin50​

Sagot :

Nepalieducationidn

Answer:

Step-by-step explanation:

As we have,

2sinxcosy = sin(x + y) + sin(x - y)

[tex]=2sin70cos20\\\\=sin(70 + 20) + sin(70 - 20)\\\\=sin90 + sin50[/tex]

Hence, LHS=RHS

Xignersoidn

LHS = RHS

[tex]2sinxcosy = sin(x + y) + sin(x - y)[/tex]

[tex]= 2sin70cos20[/tex]

[tex] = sin (70+ 20) + sin(70 - 20)[/tex]

[tex]=sin90+ sin50[/tex]

Hence, Proved

We appreciate your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. IDNLearn.com has the solutions to your questions. Thanks for stopping by, and come back for more insightful information.