Q4 of 80 Page 295

If cos then let us determine the values of all trigonometric ratio of the angle θ.

Given,


Need to find the trigonometric ratios


⇒


[we know that hypothesis2 = perpindicular2 + base2]


⇒ (25)2 = P2 + (7)2


⇒ 625 = P2 + 49


⇒ 576 = P2


⇒ P = 24


⇒


= = 0.96


⇒


= = 0.28


⇒


= = 3.42


⇒


= = 0.291


⇒


= = 1.04


⇒


= = 3.57


More from this chapter

All 80 →
2

Soma has drawn a right angled triangle ABC whose ABC = 90, AB = 24 cm. and BC = 7 cm. By calculating, let us write the value of sinA, cosA, tanA and cosec A.

 3

If in a right angled triangle ABC, ∠C=90°, DC = 21 unit and AB = 29 units, then let us find the values of sinA, cosA, sinB and cosB.

 5

If cot θ = 2, then let us determine the values of tan θ and sec θ and show that 1+ tan2 θ = sec2 θ.

 6

If cos θ = 0.6, then let us show that, (5 sin θ – 3 tan θ) = 0.