Question

1.tan^2y-1/cos^2y
2.secy​

Answer 1

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.

Answer 2

Step-by-step explanation:

Explanation:

Apply the following identities:

•

tan

θ

=

sin

θ

cos

θ

•

cot

θ

=

1

tan

θ

=

1

sin

θ

cos

θ

=

cos

θ

sin

θ

•

sec

θ

=

1

cos

θ

•

csc

θ

=

1

sin

θ

Start the simplification process on both sides.

1

+

sin

y

cos

y

1

+

cos

y

sin

y

=

1

cos

y

1

sin

y

Put on a common denominator:

cos

y

+

sin

y

cos

y

sin

y

+

cos

y

sin

y

=

1

cos

y

×

sin

y

1

cos

y

+

sin

y

cos

y

×

sin

y

sin

y

+

cos

y

=

sin

y

cos

y

cos

y

+

sin

y

cos

y

×

sin

y

sin

y

+

cos

y

=

sin

y

cos

y

sin

y

cos

y

=

sin

y

cos

y

Identity proved!!

Hopefully this helps!