Question

hii frnds
can anyone of please send me the answer​

Answer 1

Answer:

hii

Step-by-step explanation:

given here:

cosh x= 5/2.

find here:

(1) cos h(2x)

(2)sing(2x)

we know that:

cosh 2x= 2cosh^2-1.

cosh 2x= 2* (5/2)^2-1.

= 25*2/4 -1.

= 25/2. - 1

. =23/2.

again ..

cosh 2x= 1+2sinh^2 x

23/2= 1+sinh^2 x

sinh^2 x =21/2

sinh x= root (21/2).

using formula

sinh 2x= 2 sinh x cosh x.

sinh 2x= 2*root(21/2)*5/2

. = 5 root(21/2).

I hopes its helps u.

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please marks brainiest!! ✌️✌️

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