Trigonometry Important Questions Set-2 for SSC CGL Exam

- A ladder is resting against a wall at height of 10m. If the ladder is inclined with the ground at an angle of 30°, then the distance of the foot of the ladder from the wall is

(a) m

(b) m

(c) m

(d) m

Answer : (a) m

Explanation : Let 'x' be the distance of foot of ladder

tan 30° = =

=

x = m

- tan 7° tan 23° tan 60° tan 67° tan 83 is equal to

(a)

(b) 1

(c) 0

(d)

Answer: (d)

Explaination: tan 7° tan 23° tan 60° tan 67° tan 83°

= tan (90° - 83°)tan (90° - 67°)tan 60° X tan 67° X tan 83°

= Cot 83° X Cot 67° X tan 60° tan 67° tan 83°

= X X tan 60° X tan 67° X tan 83°

= tan 60°

=

3.The value of (sec 0 - cos 0)(cosec 0 - sin 0)(tan 0 + cot 0) is

(a) 2

(b) 0

(c) 1

(d)

Answer : (c) 1

Explaination :

(sec 0 - cos 0)(cosec 0 - sin 0)(tan 0 + cot 0)

=

= X

=

=