Question

evaluate √1-sina/√1+sina​

Answer 1

Answer:

LHS=

1−sinA

1+sinA

=

1−sinA

1+sinA

×

1+sinA

1+sinA

=

(1+sinA)(1−sinA)

(1+sinA)

2

=

1−sin

2

A

(1+sinA)

2

=

cos

2

A

(1+sinA)

2

=

(

cosA

1+sinA

)

2

=

cosA

1+sinA

=

cosA

1

+

cosA

sinA

=secA+tanA

=RHS

Step-by-step explanation:

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Answer 2

Answer:

Wind Eroded Arid Landforms – Deflation basins, Mushroom rocks, Inselbergs, Demoiselles, Demoiselles, Zeugen , Wind bridges and windows. Depositional Arid Landforms – Ripple Marks, Sand dunes, Longitudinal dunes, Transverse dunes, Barchans, Parabolic dunes, Star dunes and Loess.The action of erosion can create an array of coastal landscape features. For example, erosion can bore holes that form caves. When water breaks through the back of the cave, it can create an arch. The continual pounding of waves can cause the top of the arch to fall, leaving nothing but rock columns called sea stacks.