﻿ The number of integral values of k for which the equation 7 cos x + 5 sin x = 2k + 1 has a solution is   : Kaysons Education

# The Number Of Integral Values Of k for Which The Equation 7 Cos x + 5 Sin x = 2k + 1 Has A Solution Is

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## Question

### Solution

Correct option is

8

The given equation can be written as r cos (x - α) = 2k + 1 where r

cos α = 7, r sin α = 5

Which gives 8 integral values of k.

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