Advertisements
Advertisements
प्रश्न
State for any acute angle θ whether cos θ increases or decreases as θ increases.
पर्याय
Increases
Decreases
Advertisements
उत्तर
Increases
Explanation:
For acute angles, remember what cosine means: base over hypotenuse. If we increase the angle, then the hypotenuse side gets larger. That means "base/hypotenuse" gets smaller or decreases.
APPEARS IN
संबंधित प्रश्न
If sin 3A = 1 and 0 < A < 90°, find sin A
If 2 cos 2A = `sqrt3` and A is acute,
find:
(i) A
(ii) sin 3A
(iii) sin2 (75° - A) + cos2 (45° +A)
Solve the following equation for A, if 2cos2A = 1
Solve the following equation for A, if 2 sin 3 A = 1
Calculate the value of A, if cos 3A. (2 sin 2A - 1) = 0
If sin 3A = 1 and 0 < A < 90°, find `tan^2A - (1)/(cos^2 "A")`
If A = 30°, verify that cos2θ = `(1 - tan^2 θ)/(1 + tan^2 θ)` = cos4θ - sin4θ = 2cos2θ - 1 - 2sin2θ
Find the value of 'y' if `sqrt(3)` = 1.723.
Given your answer correct to 2 decimal places.
Evaluate the following: sec16° tan28° - cot62° cosec74°
Evaluate the following: `(sin36°)/(cos54°) + (sec31°)/("cosec"59°)`
