Question

If cos(alpha + beta) + sin(alpha – beta) = 0. then (alpha + beta) can be -
1. π
2. 3π/4
3. 5π
4. 5π/2​

Answer 1

REFER THE ATTACHMENT⤴️

• $\Large{\red{\bold{Option-A\;\mapsto\;\pi}}}$

@MrMonarque❤️

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