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Trigonometry

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Trigonometry

			Recent Activity

If sin A = 3/4, calculate cos A and tan A Maths Platter	0	0	Mar 29

In triangle PQR, right-angled at Q, PQ = 24 cm, PR = 13 cm. Determine tan P - cot R Maths Platter	0	0	Mar 29

In triangle ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine sin A, cos A, sin C, cos C Maths Platter	0	0	Mar 29

Prove (1-tan²A)/(1+tan²A) = cos²A - sin²A if 3 cot A = 4 Maths Platter	0	0	Mar 29

Evaluate (1 + sin θ)(1 - sin θ)/(1 + cos θ)(1 - cos θ) and cot²θ if cot θ = 7/8 Maths Platter	0	0	Mar 29

Find sin A and sec A if 15 cot A = 8 Maths Platter	0	0	Mar 29

Calculate all trigonometric ratios if sec θ = 13/12 Maths Platter	0	0	Mar 29

Show ∠A = ∠B if ∠A and ∠B are acute angles such that cos A = cos B Maths Platter	0	0	Mar 29

Verify 3cosec²(π/3) + 4sin²(π/4) = 6 Maths Platter	0	0	Mar 29

Verify cos30°cos60° + sin30°sin60° = √3/2 Maths Platter	0	0	Mar 29

Find the value of 4/3cot²30° + 3sin²30° - 2cosec²60° - 3/4tan²30° Maths Platter	0	0	Mar 29

Find all other trigonometric ratios of angle A is tan A = 1/√3 Maths Platter	0	0	Mar 29

Convert the radians to degrees. 4π/5 rad, 8π/3 rad, 11π/9 rad, 19π/3 rad, -27π/5 rad Maths Platter	0	0	Mar 29

Convert the degrees to radians. 80°, 36°, 15°, -520°, 340° Maths Platter	0	0	Mar 29

Verify that cos45°cos60° - sin45°sin60° = (1 - √3)/2√2 Maths Platter	0	0	Mar 29

Verify that (1/2)sin30° + (1/3)tan²45° + (1/4)sec180° = 1/3 Maths Platter	0	0	Mar 29

Prove that (1 + cot²θ)sin²θ = 1 Maths Platter	0	0	Mar 29

Prove that cos²θ.tan²θ + cos²θ = 1 Maths Platter	0	0	Mar 29

Prove that sin²θ.cot²θ + sin²θ = 1 Maths Platter	0	0	Mar 29

Find the value of 4/3cot²30° + 3sin²30° - 2cosec²60° - 3/4tan²30° Maths Platter	0	0	Mar 29

Find the value of A and B if sin (A - B) = 1/2 and cos (A + B) = 1/2 Maths Platter	0	0	Mar 29

Find the value of sin (A + B) if sin A = 3/5 and cos B = 5/13 Maths Platter	0	0	Mar 29

Prove sin⁴A - cos⁴A = 2sin²A - 1 Maths Platter	0	0	Mar 29

Prove tanA - cotA = (1 - 2cos²A)/sinA.cosA Maths Platter	0	0	Mar 29

Prove 1/(tanA + cotA) = sinA.cosA Maths Platter	0	0	Mar 29

Prove (1 + sinA)/(1 - sinA) = (cosecA + 1)/(cosecA - 1) Maths Platter	0	0	Mar 29

Prove (secA - 1)/(secA + 1) = (1 - cosA)/(1 + cosA) Maths Platter	0	0	Mar 29

"Statistics is the grammar of science."

Karl Pearson

Free Maths & Stats Videos for Learning!

Trigonometry

If sin A = 3/4, calculate cos A and tan A

In triangle PQR, right-angled at Q, PQ = 24 cm, PR = 13 cm. Determine tan P - cot R

In triangle ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine sin A, cos A, sin C, cos C

Prove (1-tan²A)/(1+tan²A) = cos²A - sin²A if 3 cot A = 4

Evaluate (1 + sin θ)(1 - sin θ)/(1 + cos θ)(1 - cos θ) and cot²θ if cot θ = 7/8

Find sin A and sec A if 15 cot A = 8

Calculate all trigonometric ratios if sec θ = 13/12

Show ∠A = ∠B if ∠A and ∠B are acute angles such that cos A = cos B

Verify 3cosec²(π/3) + 4sin²(π/4) = 6

Verify cos30°cos60° + sin30°sin60° = √3/2

Find the value of 4/3cot²30° + 3sin²30° - 2cosec²60° - 3/4tan²30°

Find all other trigonometric ratios of angle A is tan A = 1/√3

Convert the radians to degrees. 4π/5 rad, 8π/3 rad, 11π/9 rad, 19π/3 rad, -27π/5 rad

Convert the degrees to radians. 80°, 36°, 15°, -520°, 340°

Verify that cos45°cos60° - sin45°sin60° = (1 - √3)/2√2

Verify that (1/2)sin30° + (1/3)tan²45° + (1/4)sec180° = 1/3

Prove that (1 + cot²θ)sin²θ = 1

Prove that cos²θ.tan²θ + cos²θ = 1

Prove that sin²θ.cot²θ + sin²θ = 1

Find the value of 4/3cot²30° + 3sin²30° - 2cosec²60° - 3/4tan²30°

Find the value of A and B if sin (A - B) = 1/2 and cos (A + B) = 1/2

Find the value of sin (A + B) if sin A = 3/5 and cos B = 5/13

Prove sin⁴A - cos⁴A = 2sin²A - 1

Prove tanA - cotA = (1 - 2cos²A)/sinA.cosA

Prove 1/(tanA + cotA) = sinA.cosA

Prove (1 + sinA)/(1 - sinA) = (cosecA + 1)/(cosecA - 1)

Prove (secA - 1)/(secA + 1) = (1 - cosA)/(1 + cosA)