If sint = 4/5 and tis in the first quadrant, find cos(2t) -7/25 -9/25 7/25 24/25 None of these

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Q: If sint = 4/5 and tis in the first quadrant, find cos(2t) O-7/25 O -9/25

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Q: given that cos(X)=4/5. X lies in 1st quadrant. Find cosec(X)

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A: we are given that cosθ =513 and we asking to find sinθ.  we will solve with the help of Pythagoras…

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A: (a) We know that, coscos-1 x=x Therefore we get, coscos-1-0.5=-0.5

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Q: 7. If sin 0 and 0 is in the first quadrant, find cos 20. %3D

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Q: If sint = 4/5 and t is in the first quadrant, find cos(2 t) -7/25 -9/25 7/25 24/25 None of these

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Q: If cos x = -12/13 and x is in quadrant III, find a. sin () b. cos (2x)

A: given data  cosx = -12/13   a 2sin2x/2 = 1- cosx 2sin2x/2 = 1 -(-12/13) sin2x/2=25/26 sinx/2 = 5/26…

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Q: If cos(θ)=1/3 and θ is in the 4th quadrant, find the exact value for sin(θ).

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