Login
Login
Register
Questions
Unanswered
Tags
Categories
Ask a Question
Ask a Question
Prove that: -1 + sin A sin ( 90° - A)/ cot ( 90° - A) = - sin^2 A
+2
votes
asked
Jan 31, 2019
in
Class 11
by
kratos
Prove that:
-1 + sin A sin ( 90° - A)/ cot ( 90° - A) = - sin2 A
cbse
trigonometry
class-11
trigonometric ratios of acute angles
class-9
class-10
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
+5
votes
answered
Oct 14, 2020
by
kratos
Best answer
-1 + sin A sin ( 90° - A)/ cot ( 90° - A) = - sin2 A
Please
log in
or
register
to add a comment.
No related questions found
