Maths : Trigonometry: Book Back, Exercise, Example Numerical Question with Answers, Solution: Exercise 6.4: Method of using Trigonometric Table

**Method of using Trigonometric Table**

**Exercise 6.4**

**1. Find the value of the following:**

**(i) sin 49****°**** (ii)
cos74****°****39′ (iii) tan54****°****26′
(iv) sin21****°****21′ (v) cos33****°****53′
(vi) tan70****°****17′**

**2. Find the value of θ if**

**(i) sin θ ****=**** 0.9975
(ii) cos θ ****=**** 0.6763**** ****(iii) tan θ ****=**** 0.0720**** (iv) ****cos θ ****=**** 0.0410
(v) tan θ ****=**** 7.5958**

**3. Find the value of the following:**

**(i) sin 65****°****39′**** + ****cos 24****°****57′
+ tan10****°****10′****
****(ii)
tan 70****°****58′****
+ ****cos15****°****26′ - sin 84****°****59′**

**4. Find the area of a right triangle
whose hypotenuse is 10 cm and one of the acute angle is 24**

**5. Find the angle made by a ladder of
length 5 m with the ground, if one of its end is 4m away from the wall
and the other end is on the wall.**

**6. In the given figure, HT shows
the height of a tree standing vertically. From a point P, the angle of elevation
of the top of the tree (that is **

Tags : Numerical Problems with Answers, Solution | Trigonometry | Maths , 9th Maths : UNIT 6 : Trigonometry

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9th Maths : UNIT 6 : Trigonometry : Exercise 6.4: Method of using Trigonometric Table | Numerical Problems with Answers, Solution | Trigonometry | Maths

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