Challenger App

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads
image.png

A1:4

B2:1

C1:2

D1:1

Answer:

D. 1:1

Read Explanation:

sin2A+cos2A=1sin^2A+cos^2A=1

sin2A=cos2(90−A)sin^2A=cos^2(90-A)

cos2A=sin2(90−A)cos^2A=sin^2(90-A)

sin⁡222+sin268cos233+cos257\frac{\sin^2{22}+sin^2{68}}{cos^2{33}+cos^2{57}}

sin⁡222+cos222cos233+sin233\frac{\sin^2{22}+cos^2{22}}{cos^2{33}+sin^2{33}}

1:11:1


Related Questions:

Find the value of cos 120° cos 240° cos 180° cos 60°.
image.png
A tower stands 50 meters tall. From its peak, the angles of depression to the top and bottom of a nearby building are measured at 30° and 45°, respectively. Determine the approximate height of the building as well as the horizontal distance separating the tower from the building.
image.png

In the given figure ∠ABC=∠ABD,BC=BDthen△CAB=△\angle{ABC} = \angle{ABD}, BC = BD then \triangle{CAB} =\triangle___________

image.png