Question

If sin 2a= cos(a+24°) then find the value of a​

Answer 1

${\red{\huge{\underline{\mathbb{Solution:-}}}}}$

sin2a = cos(a+24°)

${\green{\bold{We \:know\: that\:sin∅ = cos(90 -∅)}}}$

=>cos(90°-2a)=cos(a+24°)

=>90°-2a = a+24°

=> -2a-a = 24°-90°

=> -3a = -66

=>3a = 66

=>a = 22

★ Value of 'a' is 22.

Answer 2

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