# trigonometry to formulas list problems basic table questions

Trigonometry To Formulas List Problems Basic Table Questions

Chapter 8 : Introduction To Trigonometry Table and Formulas List Basic Questions or Problems

## Chapter 8 : Introduction To Trigonometry

### TAKE A LOOK: 2. Relationship between different trigonometric ratios 3. Trigonometric Identities. 4. Trigonometric Ratios of some specific angles. 5. Trigonometric ratios of complementary angles. ### Level – 1

1. If θ and 3θ-30° are acute angles such that sinθ=cos(3θ-30°),then find the value of tanθ  Ans.cosr9

### Level - 2 8. In a right angle triangle ABC,right angled at B, if tanA=1, then verify that 2sinA cosA = 1.

9. If tan (A-B)=√3, and sinA =1, then find A and B.
Ans:90°& 30° ### Level - 3 7. Prove that sinθ/(1-cosθ) + tanθ/(1+cosθ) = secθcosecθ + cotθ. #### Level - 4 #### Self Evaluation   ### NCERT Books Free Pdf Download for Class 5, 6, 7, 8, 9, 10 , 11, 12 Hindi and English Medium

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