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Test: Complementary Angles of Trigonometry - Question 1

If tan 2A = cot (A – 18°), then the value of A is

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Test: Complementary Angles of Trigonometry - Question 2

The value of cos^{2} 17° – sin^{2} 73° is

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Test: Complementary Angles of Trigonometry - Question 3

If sec 4A = cosec (A-20°),where 4A is an acute angle, find the value of A

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Test: Complementary Angles of Trigonometry - Question 5

The value of cos θ cos(90° - θ) – sin θ sin (90° - θ) is:

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Test: Complementary Angles of Trigonometry - Question 6

Out of the following options, the two angles that are together classified as complementary angles are

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Test: Complementary Angles of Trigonometry - Question 8

If cos (40° + A) = sin 30°, the value of A is:

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Test: Complementary Angles of Trigonometry - Question 11

sin (60° + θ) – cos (30° – θ) is equal to (where (60° + θ) and (30° - θ) are both acute angles):

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Test: Complementary Angles of Trigonometry - Question 12

The value of tan1°.tan2°.tan3°………. tan89° is :

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Test: Complementary Angles of Trigonometry - Question 13

Using the ratio of complementary angles, the value of is

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Test: Complementary Angles of Trigonometry - Question 14

If x sin (90° – θ) cot (90°- θ) = cos (90° – θ) then x is

Test: Complementary Angles of Trigonometry - Question 15

If A and B are the angles of a right angled triangle ABC, right angled at C, then 1+cot^{2}A =

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