- What is the value of cos .π / +
cos .π / + cos.^ π/ + cos.^ π/?
(a) 1 (b) - 1 (c) - (d)^
- What is the value of tan (-
1575 )?
(a) 1 (b)^ (c) 0 (d) - 1
- For which acute angle Ѳ,
(^) √ cot Ѳ-5?
(a)^ (b)^ (c)^ (d)^
- The value of the expression 1-
is equal
to:
(a) 0 (b) 1 (c) sin y (d) cos y
- The angle subtended at the
centre of a circle of radius 3
metres by an arc of length 1 metre
is equal to:
(a) 20 (b) 60 (c)^ rad (d) 3 rad
- If A + B + C=^ , then the value
of cos 2A + cos 2B + cos 2C is
equal to:
(a) 1-4 cos A cos B cos C (b) 4 sin
A sin B sin C (c) 1+2 cos A cos B
cos C (d) 1-4 sin A sin B sin C
- The value of^
(^)
is
equal to:
(a) cos 2A (b) 8 cos 2A (c)
(d)
- The value of sin 10+sin
20 +sin 30+.......+ sin 360 is
equal to:
(a) 0 (b) ½ (c) 1 (d) 2 - The value of sin Ѳ + sin
(Ѳ+120) + sin (Ѳ+240) is equal
to:
(a) 0 (b) 1 (c) √ (d) 2 - x= sin Ѳ cos Ѳ and y= sin
Ѳ+cos Ѳ are satisfied by which one
of the following equations?
(a)
(b) (c)
(d) - If sin x+ sin y= α, cos x + cos y=
b, then what is the value of cos (x-
y)?
(a) (b) (c)
(^(^) ) (d)^
(^
(^) )
- What is the value of sin
(1110)?
(a) 1 (b)^ (c) √^ (d) √ - If for A, B 0 1 ; sin (A+B)=
and sin (A-B)=^ , then the value of
tan (A+2B)tan(2A+B) is equal to:
(a) - 1 (b) 0 (c) 1 (d) 2 - If α+β+γ= 2π, then the value of
tan^ is equal to:
(a) tan^ (b) tan