**Trigonometric Ratios CBSE NCERT Solutions Chapter 8 Exercise 8.2 Question 4**

**4.** State whether the following are true or false. Justify your answer.

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by Jashan

**Trigonometric Ratios CBSE NCERT Solutions Chapter 8 Exercise 8.2 Question 4**

**4.** State whether the following are true or false. Justify your answer.

by Jashan

**Trigonometric Ratios CBSE NCERT Solutions Chapter 8 Exercise 8.2 Question 3**

**3.** If tan (A+B) = and tan(A-B) = ; O (A+B), find A and B.

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**Trigonometric Ratios CBSE NCERT Solutions Chapter 8 Exercise 8.2 Question 2**

**2.** Choose the correct option and justify your choice:

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**Trigonometric Ratios CBSE NCERT Solutions Chapter 8 Exercise 8.2 Question 1**

**1. Evaluate the following:**

(i) sin 60 cos 30 + sin 30 cos 60

(ii)

(iii) )

(iv) (

(v) (

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**Values of Trigonometric ratios for 0, 30,45, 60 and 90 degrees**

I have noticed that students cannot actually remember values of six trigonometric ratios **(sin, cos, tan, cosec, sec and cot)** for **0, 30, 45, 60 and 90**. These values are used very often and it is recommended from my point of view that student should be able to tell the values instantly when asked.

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