Introduction to Trigonometry
If secx+tanx=p then prove that sinx=p2+1p2−1
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Prove that sin2Acot2A +cos2Atan2A= 1.
Evaluate the following :cot80tan10
Prove that :(sinA+secA)2+(cosA+cosecA)2=(1+secAcosecA)2.
Express the following in terms of trigonometric ratios of angles lying between 0 and 45:cosec540+sin720
The value of sinθ× cosecθ= _____
Find the value of : cot37o2tan53o−tan10ocot80o
Consider the following statements : 1. cosθ+secθ can never be equal to 1.52. tanθ+cotθ can never be less than to 2Which of the above statements is/are correct ?