Question

(1)
3
(2)
(a) From the figure (1) given below, find the value of sec 0.
(b) From the figure (2) given below, find the values of:
(i) sin x (ii) cot x (iii) cot? x - cosec2 x (iv) sec y (v) tana y
1
A
cos y
А A
20
13
Н
pl
12
M
267
B.
D 5 C
у
B 210
B В
(1)
(2)​

Answer 1

Answer:

Here sine and cosine; tan and cot; sec and cosec ... (x) cos 2A = cos2 A – sin2 A = 1 – 2 sin2 A = 2 cos2 A – 1 = 2. 2 ... Example 3 Find the value of 3 cosec 20° – sec 20

Answer 2

Answer:

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