ICSE Archives - Page 41 of 90

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

(i) tan A + cot A = sec A cosec A (ii) (1 – cos A) (1 + sec A) = tan A sin A

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This ques has been taken from Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-18 We hage have to ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

(i) (sec A + tan A) (1 – sin A) = cos A (ii) (1 + tan2 A) (1 – sin A) (1 + sin A) = 1

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This is an important question taken from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-1 We ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

Prove that following: (i) cos θ sin (90° – θ) + sin θ cos (90° – θ) = 1 (ii) tan θ/ tan (90o – θ) + sin (90o – θ)/ cos θ = sec2 θ (iii) (cos (90o – θ) cos θ)/ tan θ + cos2 (90o – θ) = 1 (iv) sin (90o – θ) cos (90o – θ) = tan θ/ (1 + tan2 θ)

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This ques is very important and has been taken from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric IdentitiesRead more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

1). 2(sec2 35°- cot 2 55°) – cos 28° cosec 62°/tan 18° tan36° tan 30° tan 54° tan 72°. (ii)[cosec2 (90°- theta) – tan2 theta] / 2 (cos2 48° + cos2 42°) – 2tan2 30° sec2 52° sin2 38°/cosec2 70°- tan2 20°

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This ques is from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-18 1). 2(sec2 35°- ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

(i) (tan 25o/ cosec 65o)2 + (cot 25o/ sec 65o)2 + 2 tan 18o tan 45o tan 75o (ii) (cos2 25o + cos2 65o) + cosec θ sec (90o – θ) – cot θ tan (90o – θ)

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This is an important question taken from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-18 (i) ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

Without using trigonometric tables, evaluate the following (i) (sin 35o cos 55o + cos 35o sin 55 o)/ (cosec2 10o – tan2 80 o) (ii) sin2 34o + sin2 56o + 2 tan18o tan 72o – cot2 30o

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This ques has been asked in 2010. So it is very important ques. This ques has been taken from the Book ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

Without using trigonometric tables, evaluate the following (i) (sin 65o/ cos 25o) + (cos 32o/sin 58o) – sin 28o sec 62o + cosec2 30o (ii) (sin 29o/ cosec 61o) + 2 cot 8° cot 17° cot 45° cot 73° cot 82° – 3(sin² 38° + sin² 52°).

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This ques has been asked in 2015 so it is very important question This question is from the Book- ML AggarwalRead more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

Without using trigonometric tables, evaluate the following (6 to 10): 6. (i) cos2 26o + cos 64o sin 26o + (tan 36o/ cot 54o) (ii) (sec 17o/ cosec 73o) + (tan 68o/ cot 22o) + cos2 44o + cos2 46o

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This question is from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-18 This ques has ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

If 12 cosec θ = 13, find the value of (2 sin θ – 3 cos θ)/ (4 sin θ – 9 cos θ)

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This ques has been taken from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter 18th Chapter- Trigonometric Identities This has been ...Read more

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

If tan A = 1/√3, find all other trigonometric ratios of angle A.

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This is an important question from Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities This question has been asked in ...Read more

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