Question

MATHEMATICS - VIII PART-I
1.
CHALLENGERS
Find the values of the following:
i) cos 585°
ii) tan 480°
iii) sec 510°
ST
- 2T
v) cosec 750°
vi) sin
vii) tan
3
3
2.
Obtain the values of the six trigonometric ratios for the angles (90° + E
1
3. If sin 0= -
3
ว
and does not lie in third quadrant, then find the values
4.
5.
Prove that tan 10°. tan20°. tan30°. tan40°. tan50°. tan60°. tan70°. tan
If ABCD is a cyclic quadrilateral, then prove that
i) sinA + sinB = sin C + sin D
ii) cos A + cos E​

Answer 1

Answer:

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Answer 2

Answer:

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