show that (sec A+tan A ) (1-sin A) = cos A
Answers
Answered by
1
Answer:
(sec A + tanA ) ( 1-sinA)
Step-by-step explanation:
= cos A .
Answered by
0
Answer:
(secA+tanA)(1-sinA)= cosA substitute secA= 1/cosA
and substitute tanA= sinA/cosA
Step-by-step explanation:
=((1/cosA)+(sinA/cosA))(1-sinA)
=((1+sinA)/cosA)(1-sinA)
=(1^2-sin^2A)/cosA using (a+b)(a-b)=a^2-b^2
=cos^2A/cosA
=cosA
=RHS
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