Question

If sin alpha=1 by root 2
and tan beta =1. then the value of cos(a + b) is​

Answer 1

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If sin alpha=1 by root 2

and tan beta =1. then the value of cos(a + b) is ?

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Sinα=$\frac{1}{\sqrt{2}}$

Tanβ=1

[°•° Sin45=$\frac{1}{\sqrt{2}}$ and Tan45=1]

→Sinα=Sin45

α=45

→Tanβ=Tan45

β=45

Cos(α+β)=cos(45+45)

→Cos90=0 [Cos90=0]

$\mathcal{BE \: BRAINLY}$