If tan = 1 + 2 tan ( , are positive acute angles), then 2 cos – McqOptions

MCQOPTIONS

1.	If tan = 1 + 2 tan ( , are positive acute angles), then 2 cos cos is equal to
A.	0
B.
C.	1
D.	- 1
Answer» B.

Discussion

No Comment Found

Related MCQs

The angles of elevation of an aeroplane flying vertically above the ground, as observed from the two consecutive stones, 1 km apart; are 45 and 60 aeroplane from the ground is :
If the angle of elevation of the top of a pillar from the ground level is raised from 30 to 60 , the length of the shadow of a pillar of height 50 3 will be decreased by
From a point P on a level ground, the angle of elevation to the top of the tower is 30 . If the tower is 100 metre high, the distance of point P from the foot of the tower is (Take 3 = 1.73)
Find the angular elevation of the Sun when the shadow of a 15 metre long pole is (15 / 3) metre.
If A is an acute angle and cot A + cosec A = 3, then the value of sin A is
If x = a sec and y = b tan then a -b = ?x y
The value of tan 11 tan 17 tan 79 tan 73 is
If sin + sin = 1, then the value of cos2 + 3 cos10 + 3 cos8 + cos6 1 is
If for any acute angle A, sin A + sin A = 1, then the value of cos A + cos4 A is
If 0 90 and 4 cos 4 3 cos + 3 = 0 then the value of is