Challenger App

No.1 PSC Learning App

1M+ Downloads
sin A = 1/2 and cos B = 1/2 , then the value of (A+B) is

A30°

B90°

C45°

D60°

Answer:

B. 90°

Read Explanation:

sinA = 1/2 A= 30 cosB = 1/2 B= 60 A+B= 30 + 60 = 90°


Related Questions:

If Cos 3θ = Sin (θ - 34°), then the value of θ as an acute angle is:

The value of cosec230sin245+sec260tan60cosec245sec260tan45\frac{{\rm cose{c^2}30^\circ {{\rm \sin }^2}45^\circ + {{\rm \sec }^2}60^\circ }}{{\rm tan60^\circ \rm cose{c^2}45^\circ - {{\rm \sec }^2}60^\circ \rm tan45^\circ }}  is:

Find x if sinx=12sin x=\frac{1}{2}

A shadow of a tower standing on a level ground is found to be 40√3 meters longer when the Sun's altitude is 30° than when it is 60°. The height of the tower is:
image.png