Q2 of 104 Page 188

In ΔABC, m∠B = 90. If BC = 3 and AC = 5, find all the six trigonometric ratios of ∠A.

Pythagoras theorem

32 + AB2 = 52


⇒ AB = 4



we know that











More from this chapter

All 104 →
1

In ΔABC, m∠A = 90. If AB = 5, AC = 12 and BC = 13, find sinC, cosC, tanB, cosB, sinB.

 3

If cosA = find sinA and tanA.

 4

If cosec θ = find tan θ and cos θ.

 5

If cosB = , find the other five trigonometric ratios.