Evaluate the expressions: arctan(-√3) arctan(-√3)

Solution:-

To evaluate

Consider a right angle triangle with base angle x =

⇒tan x =

We know that for=60°,  tan(60°)=

here the value is so it will lie in 2nd or 4th quadrant.

For 2nd quadrant the value of x will be x=180°-

⇒ x=180°-60°=120°.

For 4th quadrant the value of x will be x=360°-

⇒ x=360°-60°=300°.

In radian

For 2nd quadrant the value of x will be x=180°-

⇒ =1.04(approx)

For 4th quadrant the value of x will be x=360°-

⇒ .

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐