Answers edited by Swarna Islam
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Prove that tan(A+B)*tan(A-B)=cos²B-cos²A/cos²B-sin²A?
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Question #b18b1
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If tanA+sinA=p and tanA-sinA=q. Then proove that p^2-q^2=4sqrt (pq) ?
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Question #6b51b
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Can someone verify this?
(cotx-1)/(cotx+1) = (1-sin2x)/(cos2x)
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Question #2144a
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A projectile is shot from the ground at a velocity of 15 m/s at an angle of pi/6. How long will it take for the projectile to land?
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How do you solve the following system?: 9x +12y = 7 ,
-2x - 21y = -41
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Question #efef9
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Question #70f00
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Question #786a6
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How do you find the domain and range of f(x)=-4+sqrt(x+3)?
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Question #e7dd8
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Question #74225
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Prove tan^-1 (cot (theta)) /2 = pi/4 + theta/2?
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Question #703cc
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How do you determine tantheta given costheta=1/8, (3pi)/2<theta<2pi?