Advertisements
Advertisements
Question
Use tables to find the acute angle θ, if the value of cos θ is 0.6885
Solution
From the tables, it is clear that cos 46° 30’ = 0.6884
cos q − cos 46° 30’ = 0.6885 − 0.6884 = 0.0001
From the tables, diff of 1’ = 0.0002
Hence, θ = 46° 30’ − 1’ = 46° 29’
APPEARS IN
RELATED QUESTIONS
Evaluate.
cos225° + cos265° - tan245°
Evaluate:
`sin80^circ/(cos10^circ) + sin59^circ sec31^circ`
Evaluate:
14 sin 30° + 6 cos 60° – 5 tan 45°
Find the value of angle A, where 0° ≤ A ≤ 90°.
sin (90° – 3A) . cosec 42° = 1
Use trigonometrical tables to find tangent of 17° 27'
If \[\cos \theta = \frac{2}{3}\] find the value of \[\frac{\sec \theta - 1}{\sec \theta + 1}\]
If A + B = 90° and \[\tan A = \frac{3}{4}\]\[\tan A = \frac{3}{4}\] what is cot B?
If A, B and C are interior angles of a triangle ABC, then \[\sin \left( \frac{B + C}{2} \right) =\]
A, B and C are interior angles of a triangle ABC. Show that
If ∠A = 90°, then find the value of tan`(("B+C")/2)`
`(sin 75^circ)/(cos 15^circ)` = ?
