Math, asked by Nabhanya7102005, 5 months ago

COS A
sin A
6 Prove that: (0)
= cos A + sin A
1-tan A
1-cot A

Answers

Answered by bsm891983

1

Step-by-step explanation:

LHS=

1−tanA

cosA

+

1−cotA

sinA

=

1−

cosA

sinA

cosA

+

1−

sinA

cosA

sinA

=

cosA−sinA

cos

2

A

−

cosA−sinA

sin

2

A

=

(cosA−sinA)

(cosA−sinA)(cosA+sinA)

=cosA+sinA

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