Question

if sin 30 degree equal to cos theta minus 26 degree where 30 and theta minus 26 degree acute angle then find the value of theta

Answer 1

Hey dear

See attachment ☝☝



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Answer 2

Answer:

θ = 86°

Step-by-step explanation:

sin 30° = cos ( θ - 26° )...................(1)

We know that :

sin θ = cos ( 90 - θ ) [ sin θ is an acute angle ]

==> sin 30° = cos ( 90° - 30° )

==> sin 30° = cos 60°

Putting this in (1) we get :

cos 60° = cos ( θ - 26° )

==> θ - 26° = 60°

==> θ = 86°

Hope it helps ya :)

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