11th Class Math MCQS Chapter 10

2cos5?, sin3?

cos8? + cos2?

sin8? +sin?

sin8? – sin2?

sin4? – sin?

Sin(? +?)0 + Sin (? – ?) =

-2sin ? Sin?

25in ? Cos?

2Cos? Sin?

2 Cos? Cos?

Tan(90^o-a)=

-cota

tana

cota

-tana

Fundamental law of trigonometry is ______ where ?, ? are any two angles:

cos(?+ ?) = sin? cos? – cos? sin?

sin (? – ?) = sin? cos? – cos? sin?

cos(? – ?) = cos? – sin? sin?

cos(?+ ?) = cos? – sin? sin?

The angle 90° ± 0, 180° ± 0,360° ± 0 are called ________ angles.

Composite

Quadrantal

Half

Allied

sin(-a)=

sina

-sina

seca

-cosa

cot(90^o -a) =

-tana

-sina

tana

-cota

2sin? cos?

sin(? + ?) – sin(? – ?)

None of these

sin(? + ?) + sin(? – ?)

sin(? + ?) + cos(? – ?)

tan (-? + ?/2 – ?) =

tan (? – ?)

cot (? – ?)

cot (? + ?)

tan (? + ?)

2sin12° sin46° equals:

cos34° + cos58°

sin34° + sin58°

sin34° – sin58°

cos34° -cos 58°