sin theta = cos (theta- 45) then theta =?
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Step-by-step explanation:
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Answered by
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Answer:
θ = 67.5
Step-by-step explanation:
==: sin θ = cos (θ - 45)
==: sin θ = sin [90 - (θ - 45)]
==: sin θ = sin (90 - θ + 45)
==: sin θ = sin (135 - θ)
==: θ = 135 - θ
==: 2θ = 135
==: θ = 67.5
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