Question

Pls answer the 15 question.

Answer 1

Answer:

3/2

Step-by-step explanation:

Q15. [3tan 25 tan 40 tan 50 tan 65)-1/2tan²60]/( cos²29+cos²61)

=[3 tan(90- 65) tan 65 tan 40 tan(90-40)-1/2*(√3)²/cos²29+cos²(90-29)

= (3 co65 tan 65 tan40 cot40-3/2)/ (cos²29+sin²29)

=[(3*1*1-3/2)]/1

=3-3/2

=3/2