1.

Observe the following statements: Assertion (A) : 2 cosh 3 cosh5 = cosh8 + cosh2 Reason (R ) : 2cosh alpha cosh beta = cosh (alpha+beta)- cosh(alpha-beta) Then the true statement among the following is

Answer»

1)A is true, R is true, `R rArr A`
2)A is false, R is true
3)A is true, R is false
4)A is false, R is false

Answer :C


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