class 10 Archives - Page 11 of 44

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

In the adjoining figure, ∆ABC is a right-angled triangle in which ∠B = 90° , ∠A =30° and AC = 20cm. Find (i) BC, (ii) AB.

0

This is the basic and conceptual question from trigonometric ratios in which we have given a figure of ∆ABC in ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Using the formula, cos A = √(1+cos 2A)/ 2 , find the value of cos 30° , it being given that cos 60° = 1/2 .

0

This is the basic and conceptual question from trigonometric ratios in which we have cos A = √(1+cos 2A)/ 2, ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

if A and B are acute angles such that tan A= 1/3 , tan B = 1/2 and tan( A +B) = (tan A+ tanB) /(1- tanA tanB), show that A+ B = 45°.

0

This is the basic and conceptual question from trigonometric ratios in which we have given A and B are acute ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Verify: 2sin 30° cos 30° = sin 60°

0

This is the basic and exam oriented question from trigonometric ratios in which we have to prove that 2sin 30° cos ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Verify: cos 60° cos 30° – sin 60° sin 30° = cos 30°

0

This is the basic and conceptual question from trigonometric ratios in which we have been asked to prove that cos ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Show that: (cos 30° + sin 60°)/(1 + sin 30° + cos 60°) = cos 30°

0

This is the basic and conceptual question from trigonometric ratios in which we have to prove that (cos 30° + sin ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Evaluate: 4/cot^2 30° + 1/sin^2 30° – cos^2 45° – sin^2 0°

0

This is the basic and conceptual question from trigonometric ratios in which we have to calculate the value of 4/cot^2 ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Evaluate: cot^2 30° – cos^2 30° – 3/4sec^2 45° + 1/4cosec^2 30°

0

This is the basic and conceptual question from trigonometric ratios in which we have been asked to calculate the value ...Read more

0

Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Evaluate: 2cos^2 60° + 3sin^2 45° – 3sin^2 30° + 2cos^2 90°

0

This is the basic and exam oriented question from trigonometric ratios in which we have to find the value of ...Read more

0

Rajan@2021Guru

Asked: April 4, 2021In: CBSE

If x=cotA+cosA and cotA-cosA, prove that …. (x-y/x+y)^2 +( x-y/2)^2 =1

0

An important and exam oriented question from trigonometric ratios in which we have given If x=cotA+cosA and cotA-cosA and we ...Read more

Discy Latest Questions