evaluate 5sin38/cos52+cosec20/sec70.√3 cose^2 60°
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Step-by-step explanation:
= 5sin38/cos52 + cosec20/sec70.√3 cose^2 60°
= 5 sin 38/sin (90-52) + cosec 20/cosec (90-20) × √3×(2/√3)
= 5 sin 38/sin 38 + cosec 20/cosec 20 ×
2
= 5(1)+1×2
= 5+1×2
=5+2
=7
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