(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

Evaluate: `(cos55°)/(sin 35°) + (cot 35°)/(tan 55°)`

Evaluate: cos² 25° - sin² 65° - tan² 45°

Express the following in term of angles between 0° and 45° :

sin 59° + tan 63°

Express the following in term of angles between 0° and 45° :

cosec 68° + cot 72°

Express the following in term of angles between 0° and 45° :

cos 74° + sec 67°

Evaluate: `3(sin72°)/(cos18°) - (sec32°)/("cosec"58°)`.

Evaluate:

3 cos 80° cosec 10°+ 2 sin 59° sec 31°

Evaluate: `(sin 80°)/(cos 10°)`+ sin 59° sec 31°

Evaluate: `2(tan57°)/(cot33°) - (cot70°)/(tan20°) - sqrt(2) cos 45°`

Evaluate: `(cot^2 41°)/(tan^2 49°) - 2 (sin^2 75°)/(cos^2 15°)`

Evaluate: 14 sin 30°+ 6 cos 60°- 5 tan 45°.

A triangle ABC is right-angled at B; find the value of `(sec "A". sin "C" - tan "A". tan "C")/sin "B"`.

In the case, given below, find the value of angle A, where 0° ≤ A ≤ 90°.
sin (90° - 3A).cosec 42° = 1.

In the case, given below, find the value of angle A, where 0° ≤ A ≤ 90°.

cos(90° - A) · sec 77° = 1

For the equation given below; name the dependent and independent variables.
y = `(4)/(3)x` - 7

For the equation given below; name the dependent and independent variables.
 x = 9y + 4

For the equation given below; name the dependent and independent variables.
x = `(5y + 3)/(2)`

For each equation given below; name the dependent and independent variables.
y = `(1)/(7)` (6x + 5)

Find the value of:

2.65 + 1.25

Find the value of:

1. 32 - 0.91