Question

Prove that:-
4sin30°sin²60° + 3cos60°tan45° = 2sec²60° - cosec²90°
This question was asked in my exam.​

Answer 1

Step-by-step explanation:

Sin30= 1/2 , sin60= √3/2 , cos 60= 1/2, tan45 = 1, sec60= 2 & cosec 90 =1.

Now ,

4*1/2*(√3/2)² + 3*1/2*1 = 2*2² - 1

3/2 + 3/2 = 8 - 1

3 not equal to 7 .

Some little mistake in ur question. Check it

I HOPE THIS HELPS YOU.

Answer 2

Answer:

certainly this question is wrong

because LHS is not equal to RHS in this question

so either you will get a bonus mark or this was a sub-question from main question TRUE OR FALSE.