(cos^tita _sin^tita) if tita =7pie by 3and 11pie by 4
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Answer:
√2
(1 + √3)/2
Step-by-step explanation:
I)cos θ - sin θ
θ = 7π/4
= Cos (7π/4) - Sin (7π/4)
= Cos(2π - π/4) - Sin(2π - π/4)
= Cos(π/4) - (-Sin(π/4))
= Cos(π/4) + Sin(π/4)
= 1/√2 + 1/√2
= 2/√2
ANS= √2
II)cos θ - sin θ
θ = 11π/3
= Cos (11π/3) - Sin (11π/3)
= Cos(4π - π/3) - Sin(4π - π/3)
= Cos(π/3) - (-Sin(π/3))
= Cos(π/3) + Sin(π/3)
= 1/2 + √3/2
ANS= = (1 + √3)/2
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