(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Find the value of angle A, where 0° ≤ A ≤ 90°.

cos (90° – A) . sec 77° = 1

Prove that:

`(cos(90^circ - theta)costheta)/cottheta = 1 - cos^2theta`

Prove that:

`(sinthetasin(90^circ - theta))/cot(90^circ - theta) = 1 - sin^2theta`

Evaluate:

`(sin35^circ cos55^circ + cos35^circ sin55^circ)/(cosec^2 10^circ - tan^2 80^circ)`

Use tables to find sine of 21°

Use tables to find sine of 34° 42'

Use tables to find sine of 47° 32'

Use tables to find sine of 62° 57'

Use tables to find sine of 10° 20' + 20° 45'

Use tables to find cosine of 2° 4’

Use tables to find cosine of 8° 12’

Use tables to find cosine of 26° 32’

Use tables to find cosine of 65° 41’

Use tables to find cosine of 9° 23’ + 15° 54’

Use trigonometrical tables to find tangent of 37°

Use trigonometrical tables to find tangent of 42° 18'

Use trigonometrical tables to find tangent of 17° 27'

Use tables to find the acute angle θ, if the value of sin θ is 0.4848

Use tables to find the acute angle θ, if the value of sin θ is 0.3827

Use tables to find the acute angle θ, if the value of sin θ is 0.6525