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PREMIERS PUBLISHERS-TRIGONOMETRY-SOLUTION TO PROGRESS CHECK
- The number of trigonometry ratio is .
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- 1-cos^(2)theta is ………………
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- (sectheta+tantheta)(sectheta-tantheta)=……………
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- (cottheta+cosectheta)(cottheta-cosectheta) is ……………….
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- co60^(@)sin30^(@)+cos30^(@)sin60^(@)=.
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- tan60^(@)cos60^(@)+cot60^(@)sin60^(@)=.
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- (tan45^(@)+cot45^(@))+(sec45^(@)cosec45^(@)) is …………………
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- sectheta=cosecthetaiftheta is ……………
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- cottheta=tanthetaiftheta is …………………
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- The line drawn from the eye of an observe to the point of object is .
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- When the line of sight is above the horizontal level the angle formed ...
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- The angle of elevation as we move towards the foot of the vertical ob...
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- When the line of sight is above the horizontal level the angle formed ...
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