Question

Cos 55° x Cos 55
answer this​

Answer 1

Answer:

cos

(

−

100

)

=

cos

(

55

)

cos

x

+

sin

(

55

)

sin

x

cos

(

100

)

=

cos

(

55

−

x

)

cos

(

55

−

x

)

=

cos

(

100

)

cos

(

x

−

55

)

=

cos

(

100

)

x

−

55

=

2

n

π

±

100

x

=

55

+

2

n

π

±

100

Where,

n

is any integer i.e.

n

=

0

,

±

1

,

±

2

,

±

3

Answer 2

Answer:

cos55° ×cos 55°=

$\cos(55)^{2} = \cos ^{2} (55) \\ \cos ^{2} (55 ) = 0.328$

Step-by-step explanation:

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