In a triangle ABC, sec is equal to : 1. cosec 2. sec 3. cosec 4. none of these

Question

KnowledgeBoat · Accepted Answer

In triangle ABC, By angle sum property of triangle, ⇒ A + B + C = 180° ⇒ A + C = 180° - B ⇒ ........(1) Substituting value of in sec , we get : Hence, Option 1 is the correct option.

Mathematics

In a triangle ABC, sec is equal to : 1. cosec 2. sec 3. cosec 4. none of these

Trigonometric Identities

Related Questions

sin² A + sin² (90° - A) is equal to :
-1
1
2
-2

sin 67° . cos 23° + cos 67° . sin 23° is equal to :
-1
2 sin 67°
2 cos 23°
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Mathematics

In a triangle ABC, sec is equal to : 1. cosec 2. sec 3. cosec 4. none of these

Trigonometric Identities

Related Questions

sin2 A + sin2 (90° - A) is equal to :-112-2

sin 67° . cos 23° + cos 67° . sin 23° is equal to :-12 sin 67°2 cos 23°1

sin² A + sin² (90° - A) is equal to :
-1
1
2
-2

sin 67° . cos 23° + cos 67° . sin 23° is equal to :
-1
2 sin 67°
2 cos 23°
1