Question

sin^2 60+sec^2 30-tan^2 30+cos^2 60= how much

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Answer 1

Answer:

It is as

let in sin²60 and cos²60 having theta same....and similarly in sec²30 and cos²30 theta is same. so sin²theta + cos² theta equals 1 .....and sec²theta -tan²theta also equals 1 ....so put the valur....and u will get 2