In Δ ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine:

(i) Sin A, Cos A

(ii) Sin C, Cos C

In Fig. 8.13, find tan P – cot R.

If sin calculate Cos A and tan A

Given 15 cot A = 8, find sin A and sec A

Given sec calculate all other trigonometric ratios

If ∠ A and ∠ B are acute angles such that Cos A = Cos B, then show that ∠ A = ∠ B

If evaluate:

(i)

(ii)

If 3 cot A = 4, check whetheror not

In triangle ABC, right-angled at B, if find the value of:

(i) Sin A Cos C + Cos A Sin C

(ii) Cos A Cos C – Sin A Sin C

In Δ PQR, right-angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of Sin P, Cos P and tan P

State whether the following are true or false. Justify your answer.

(i) The value of tan A is always less than 1

(ii) Secfor some value of angle A

(iii) Cos A is the abbreviation used for the cosecant of angle A

(iv) Cot A is the product of cot and A.

(v) for some angle θ