Question

cos 35°=x तो sin 55 का मान x ke pado ​

Answer 1

Answer:

cos 35 = cos( 90- 55)..

= sin 55 =x...

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Answer 2

Answer:

Valueof

sin35sin55−cos35cos55

=0

Step-by-step explanation:

\begin{lgathered}We\: know \: that\\\boxed {cosAcosB-sinAsinB=cos(A+B)}\end{lgathered}

Weknowthat

cosAcosB−sinAsinB=cos(A+B)

Now,

\begin{lgathered}sin35sin55-cos35cos55\\=-(cos35cos55-sin35sin55)\\=-[cos(35+55)]\\=-cos90\degree\\=0\end{lgathered}

sin35sin55−cos35cos55

=−(cos35cos55−sin35sin55)

=−[cos(35+55)]

=−cos90°

=0

Therefore,

\begin{lgathered}Value \:of \:\\sin35sin55-cos35cos55\\=0\end{lgathered}

Valueof

sin35sin55−cos35cos55

=0

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