Without using trigonometric tables , evaluate the following: cosec²31°- tan²59°+( sin25°cos65°+cos25°sin65°)÷3tan30°tan45°tan60°
Answers
Answered by
10
Plss refer to the attachment. If any doubt plss comment.
-----mark me as brainliest plss-----
Attachments:
Answered by
7
Cosec ²31°-tan²59+(sin25cos65+cos25sin65÷3tan30tan45tan60)
=cosec²31-tan²(90-31)+(sin25cos(90-25)+cos25sin(90-25)÷3tan30tan(90-30)tan45)
=Cosec²31-cot²+(sin²25+cos²25÷3tan30cot30tan45)
=1+1/1*3*1
=1+1/3
=3+1/3
=4/3
___________________________
Pls mark me as brainliest pls!!!
Similar questions